Tuesday, February 5, 2008

How to repair Jeep Grand Cherokee Heater Blower Resistor.



I own a 2005 Jeep Grand Cherokee. I haven't had any major problems with my Jeep until the heat started fading. First the low speeds went out and then medium...until I was left with high. This might not seem too annoying, but trust me. It's not very comfortable driving an hour with blasting heat!

What's the fix? The blower motor was working fine because it still pushed out the heat on high. This leaves you with the blower resistor. In this blog, I will show you pictures I took on my cell phone step by step how to change this blower resistor out on your own Jeep.

NOTE: You DO NOT NEED TO REMOVE ALL OF YOUR PLASTICS!!! I removed mine only to see where exactly under the passenger feet area the blower motor was. Only after I removed all of the plastics did I realize it was not necessary. The blower motor is 100% covered up with plastics, but if you simply remove the glove box door, you will have instant easy access to the resistor and the screws to dismount.

What you will need:-Straight slot screw driver
-Star Tip or Allen Wrench
-Flash Light
-New resistor (Part #5143127AA)
All dealerships charge different prices. I paid $9.50. It should be about the same price.
-Patience and about 15-20 minutes to perform the job.

If you would like to make any of these pictures larger, just click the picture and you will be able to see much more detail.

Step 1. Slide this small plastic hinge by sliding towards you and pulling out toward the door.



Step 2. Remove the left side of the glove box by separating the hinge from the metal bar.



Step 3. Remove the right side of the glove box.



This is what your dash board opening will look like without the glove box.



Step 4. Remove the two screws that hold the resistor in place. You will need a star tip screw driver. I did not have one, so I used an HEX tip. Be careful though, doing it with a HEX tip could strip the screw if you are not careful.



Here is a picture of the HEX tip I used. (Also known as an allen wrench.)



Remove the two screws and it will come out like this.





You can see the red resistor where it burnt out. Some viewers have commented that their wire harness was melted. There are four wires, one for each speed. Make sure you replace the harness too (if it has melted). Not only will your speeds work again, but you reduce the risk of electrical fire from a short in the wire.



Step 5. Place the new resistor back into the mounting hole and tighten down the two screws.





Note: At this point, you should turn your key into the ON position. Make sure the radio is off so you have pure silence. Start your blower speeds from Off, 1 (low), 2, 3, 4 (high). Make sure they all work. If your heat speeds still does not work. You most likely have a more serious problem on your hands.

Step 6. Hook the hinge back on the glove box. Then clip the two mounting hinges back into place. I used the removal picture. It is still the same idea, just putting it back on this time.




Now you have successfully changed your heat blower resistor! Congratulations! Be sure to check out the comments section below in the link provided. Many viewers have had the same or additional trouble shooting issues which have been resolved through community support. Thanks for visiting!


Tags: 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 05 06 07 08 09 10 12 13 14 15 '05 '06 '07 '08 '09 '10 '11 '12 '13 '14 '15 Jeep Grand Cherokee JGC J GC Liberty Commander Patriot Blower Motor Resistor Heat Stopped Working Doesnt Doesn't No  Fix my heat High speed only

232 comments:

1 – 200 of 232   Newer›   Newest»
Anonymous said...

omg that helped me out soo much my bf had to follow it step by step and went very smoothly!!! :) thank you!
lauren

bvensko said...

:) Your welcome. It makes me happy to know that someone was able to benefit from my article.

Anonymous said...

Hey, Thanks!! Turns out the resistor is OK, just a flaky connector in the damp, but like the girl said; OMG that helped!!

Nice Job!!
joe

Anonymous said...

thanks for your help. I changed mine yesterday and its working a treat.

karl

Tony said...

Excellent work. Exactly what I needed. Took me 20 minutes but it could have been 2 hours without your help

Rick said...

Muchas gracias! Excellent post. It took me about twenty minutes, and my blower motor works perfectly.

To remove the glove box more easily, there are two STOPS on the top inside of the glove box. If you push the two STOPS downward, the glove box rotates to a larger than normal open position. In the larger abnormal open position, you can push down gently on the glove box, and it will smoothly and easily release from from the metal pins.

john said...

I was searching for prices on new heater control boxes when I saw found this post. I have a Wrangler TJ, but my wife has a Cherokee and they're virtually identical under the hood so I assume this will work for me too.

Thanks alot for posting this. I'm going to go look for a resistor now...

Anonymous said...

The "Star Tip" is called a TORX and I have used an allen wrench in a pinch and vice versa. Hopefully most people will not need to replace the wiring harness going to the resistor (sometimes it melts).

Anonymous said...

Thank you so much for you detailed account and photo's. I feel much more confident I can do this now.
I paid 140.00 for my resistor for 2001 Grand Cherokee.
Thanks again what a great thing to do.

James said...

I wish I found this page before pulling the dash apart and tracing all the wires. I found that the female plug is burnt up from a poor connection. Do you know of any web sites that I can get the female connector? I found the resistor just need the plug.

bvensko said...

James - I would start with a dealer and check out the part number and price. This will give you a good idea of the "high end price" that you can expect. Anything else you find online should be a bargain. Although I don't think a wire connector should cost much more than $10-20. Hope this helps. Bobby

Anonymous said...

Awesome post. But I can't tell from the picture how you can tell the resistor is bad...can you clarify?

bvensko said...

one has a burnt appearing resistor. the other has more vibrant color.

Anonymous said...

awesome thought to put this up on the internet. Heater wasn't working for months and didnt want to spend hundreds of dollars to get it fixed. Picked up the part, bought the tools, and took 15 minutes to fix. Works great now and only cost me $20 for the part and tools. You have a friend in pittsburgh, pa.

Anonymous said...

This is the same controls for the ac as well?? The air only worked on high and now it does not work at all..

bvensko said...

Yes, the blower motor controls the speed at which any "air movement" comes into the cabin of the vehicle. Whether it is hot or cold is up to your heater core or A/C compressor.
-Bob

Anonymous said...

Thank you so much! Im in Kinshasa, D.R.Congo (think 'Rumble in the Jungle') and just received my jeep. As you can imagine there are no Jeep dealers here or parts for that matter. With your post I was able to order the resistor from the US and replace it myself in 15 minutes. I could have gone to an 'A/C' guy here but very feasible that he may not have realized what the problem was and/or be able get the part. Anyway, A HUGE THANK YOU.

bvensko said...

D.R.Congo - Glad I could help. Please post this blog in other areas of the internet where people could use the same help.

I gain personal satisfaction in knowing that I saved so many people money, time, and the stress that I originally had prior to eliminating certain unnecessary steps.

Thanks again, Bobby.

Anonymous said...

Thanks,You are the best.It took me about 15 minutes to change.Your pictures said it all.
Thanks again
Sal

Anonymous said...

Thanks for the help! replaced in like 10 min! Only problem is, ten min later it went out again. Dealer said the blower motor is drawing too much. Any ideas?

bvensko said...

Have you checked for any melted or shorted wires? The only thing I can think of is that your power is grounding out causing the brand new resistor to burn out almost instantly.

Anonymous said...

I started out having the same issue with my Jeep but now the blower dosent run at all, I dont know if its the resistor or the whole blower motor itself that needs replacing, could it be that the resistor burnt out and is completely preventing the blower from running? BTW your pictures and descriptions are right on the money, very helpful.

bvensko said...

Reply to Post: July 5, 2009 8:57 AM

I would check your fuse panel and relays for the blower motor before buying a new blower motor. Could be an easy couple dollar fix.

Most resistors will fade only leaving high fan speeds left. However that's not to say it isn't possible for it to completely stop working.

What would I do?

1. Check your blower fuse.
2. Check your blower relay.
3. Replace your blower resistor.

If that doesn't work, it could be the blower motor.

Anonymous said...

Ok, so I checked the fuse and thats still good, where is the blower relay? Thanks for your help.

Anonymous said...

After $400 plus dollars, dealer replaced old resistor with an updated one and an updated plug, A/C works now but I can blow harder with my mouth (even on high). The blower motor doesn't seem to be getting enough power with the updated resistor, and there is no updated blower motor, please help? (I live in Fresno, it's 112 degrees) Dealer said that's the way it is no other solutions.

bvensko said...

I would check with another dealer. Sounds to me like the resistor is too high, therefore reducing the amount of electricity that powers your blower motor. I think they installed the wrong part. I live in Austin TX where it is typically 100-106* and I am not experiencing any lack of power (wind speed) or coldness. Keep me posted.

Anonymous said...

Dealer assured me it was not the wrong part, other dealer gave no other solutions. I was referring to the weather just to make a point that it is really hot and I'm not happy with subpar A/C. Thanks for any other suggestions.

bvensko said...

What year and model is your Jeep?

Anonymous said...

2002 Grand Jeep Cherokee

Rob said...

Thanks for the post! I had the blower stop on my 2001 Limited V8. Turned out to be a loose wire. I removed the glove box and trim. Turns out that the resistor is located under the glove box and i didn't have too remove anything. I pushed the wire plug and it came right back on. I'm still trying to figure a way to zip tie the plug to keep it tight.

Brandon said...

Hi,
I'm on my 2nd resistor for my 97 Cherokee, and it always works on the 1st 2nd and 3rd setting, still, after replacing the resistor it will not stay on the 4th setting for very long or not at all. Now i'm guessing there is a short in the wiring? What do I do now that I have a new resistor and still intermittent working on the 4th setting??

Alfonso said...

Man, your post really helped me, thanks for share this information you are saving me some money.

Thanks again

bvensko said...

In response to post July 21, 2009 11:22 AM :

It might not have anything to do with your electrical at all if you feel the temps are not cool enough. Have you had your AC system checked for any refrigerant leaks? It is possible that it is low. If you need to fill it up with more there are two sides on your AC refrigerant tank, a high pressure and low pressure. ONLY FILL ON THE LOW PRESSURE. You can pick up a can of (r)134A for $5-10 at your local Walmart. You will need a hose fitting too. Might cost about $10 or so. Then connect each end of the hose and gently shake the can in an upside down position until it is empty. Your AC should pour snow out of your vents after that!

bvensko said...

In response to post Rob July 22, 2009 5:03:

There should be two screws that hold your resistor in place. Are they missing? There is also a wire harness clip that connects firmly to the resistor. I can’t see where you would need zip ties.

bvensko said...

In response to post Brandon July 24, 2009 4:54 PM:

Check for a couple things:
1. Short in your wire harness that connects to the resistor.
2. Check the inside of the hole you insert the resistor into. Check with a bright flashlight to see if there is any metal accidentally touching your resistor causing it to ground out. Possibly a good bump in the road causing the temporary intermittent availability of 4th setting.

Let us know if that helped!

john said...

5143127AA Resistor $6.70 and 5191797AA Wiring harness $13.65. Only had to take the glove box door off. Screws are Torx 15. Took longer to drive to dealership than to change parts. Thanx

Anonymous said...

I replaced my resistor today, still no good, fuse and relay are also good, I guess its the blower motor itself. I cant fix that myself, I hope it dosent break my bank.

bvensko said...

In response to post at July 27, 2009 5:04 PM:

Sounds like you did not properly diagnose the problem before changing the resistor. When you first noticed something was wrong with your fan did you have any breeze at all? In other words did you have 1-4 speeds and slowly lost 1st, then 2nd...until you were left with 4th (HI) ??

Anonymous said...

Mine did not run through the speeds like that, it was just kind of fritzy for a while, I wanted to check all the other issues first, luckily the resistor only cost a few bucks and only took a few minutes to swap, but I guess its going to be the worst case with the the whole motor.

bvensko said...
This comment has been removed by the author.
bvensko said...

EDIT: I Posted the link incorrectly.

Take a look at this picture. I haven't had to change my blower motor, but it is very accessible and should not be difficult to change out. It might be expensive to order the part, but still cheaper to replace on your own.

Anonymous said...

I actually have the 2001 sport so its a tiny bit different under there then your 05' GC. From what I read online the evap canister is in the way so unless you have the tools to blow off the R4 and recap it(which I dont) its gonna have to go in. I gotta start making some phone calls for quotes. Thanks for your help, this page is really great, looks like a lot of people are hitting it up.

Anonymous said...

Hey Bobby, thanks a million for this post - it looks incredibly helpful. My situation is a little different. I've got a 2000 Grand Cherokee Limited. Any idea if that's different behind the glovebox? For me the blower stopped working for about a day, worked again, then stopped permanently a day after. Simply dead, no in between blower settings. The shops quoting me about $200 claiming it's the resistor. Now that I've found this I think I'll peak inside myself.

bvensko said...

I would definitely check the resistor first. You can pop it out in less than 10 mins. Check and see if the actual resistor has a burnt appearance. It should be a solid red. If not, then its most likely dead and is worth the $6-10 for a shot at fixing it.

From the other comments, the 2001 Sport is different from my 05 GC. I would like to assume yours is the same because its a GC too, but because yours is closer to the other fella's 2001, you might have the AC lines in the way. Once you pop off your glove box, you will have clear access to see if the AC lines are in the way.

On my 05 GC, they are not in the way, as noted in the picture. Keep me posted on your find. Any information helps tons of people! Thanks for posting.

Anonymous said...

Im the guy with the 2001 S, as far as the resistor, that's no problem, you just drop the glovebox door and you can get to the screw holding the kick panel up, unscrew that one screw and the panel drops, its smooth sailing from there, the resistor is right in front of you, 8mm socket driver and your in an out in 10 minutes. For the guy with the 2000 GC, your problem sounds just like mine, my blower went the same exact way yours did, and I have replaced my resistor and still no good, you should swap yours out too, just to be sure, but we both just might have bad blowers.

Milo said...

AWESOME!!!!!! PROB SOLVED!!!! I OWE YOU BUDDY!!

Anonymous said...

I hope you can help me out but my blower for some reason won't turn on I have cold air and hot air come out find but whenever I try to turn the blower on high or it on period it won't work I had some take a look at it and found out that it was not grounded for some reason and it started working a few weeks later I was installing something and had to take of the postive feed from the battery and when I put it back on found out my blower was working at all again so I thought it was not grounded again but that was not it for some reason the blower was not getting power I checked the fuses out and they are fine I just trying to figure this out on my own so I won't have to take it to a dealer please somebody help me.

bvensko said...

Im trying to follow your story, but thing aren't adding up. You found that the blower wasn't grounded so you fixed that and it worked. Then you disconnected your hot from the battery and after your hooked it back up the blower stopped? To me it sounds like you blew a fuse some how. Your ground, assuming it was grounded properly with a good connector and a firm metal connection under a screw or bolt, should not be affected at all. Is there any other information you can provide us with?

Anonymous said...

I Checked my fuses and everything they are fine I had to connect another wire that I had to ground it and it was working fine but when I dissconnected the postive feed from my battery and put it back on it just stop working again I checked it out with a light stick and found out it was not getting any power at all

Anonymous said...

I can send picture if you need me to

bvensko said...

have you checked your relays?

bvensko said...

Also, have you looked for any shorts in the wire harness? What type of jeep do you have and the year?

Anonymous said...

I have a 2002 jeep grand Cherokee limited

Anonymous said...

I have a 2005 Jeep Grand Cherokee too and having the same problem. I called my local dealer to get a price on the resistor part 5143127AA and he said I would need the wire connector part 5191797AA as well because the resistor won't work without it...do you think it's necessary that I get the connector part? The resistor is $14.53 and connector is $25.80.

bvensko said...

They are full of garbage. You have the same model jeep I had. I only bought the resistor for under $10. They are over charging you for that part by 50%. I would check other dealers if they are close. You do not need a wire harness unless you cut/melted yours. Otherwise, they are just trying to sell you stuff that you don't need.

squeek said...

can you tell me how to get the face plate off? I have this same problem only my fan knob no longer turns freely?

Mr Pappas said...

Thank you for posting this article. My problem is the ac/heat comes out but without any force. How do I know if it is the fuse, resistor or motor?

I figured I would check in order but when I looked at the manual and did not see the fuse for blower. How is it labeled?

Next assuming fuse is fine, the resistor, seems the cheapest to replace so I will check that next. Last step I guess is the motor, but let me get through steps 1 and 2 before I write you back.

Many thanks!

Brandon said...

Hello, I'm from the July 24th post. Replaced resistor, still only worked briefly. Guy at the shop said needed a computer that controlled it and it wasn't worth it because it was about $500. I'm still not satisfied with this, should I go to junkyard? Also do you know what computer he might be talking about?

bvensko said...

Hey Brandon, when it comes to replacing a computer, you have to have an OBDII scanner to properly diagnose it. Sorry, but I never had to change out a computer for my AC so I would hate to tell you the wrong thing on such an expensive part.

Sounds a bit fishy to me though. On a 97 Jeep, most of the AC controls are like a light switch. (You have the switch, wire, fuse, light bulb, electricity.) Same goes with the AC; in a way. (You have the AC compressor, switch, resistor, fuse, power source, blower motor, relay..that's pretty much it.)

bvensko said...

Response to Mr Papas
August 25, 2009 4:00 PM

My problem is the ac/heat comes out but without any force. How do I know if it is the fuse, resistor or motor?

/No force, I would check the blower motor. A sign of a bad resistor is fading speeds. Typically leaving you with only high speed./

I figured I would check in order but when I looked at the manual and did not see the fuse for blower. How is it labeled?

/I'm not sure what fuse is labeled as, but it should say a key term such as blower, A/C./

Mr Pappas said...

Motor not the resistor or fuse.

Thanks for your response. Any advice/postings on replacing the motor. I see where it is on the picture, just not sure if it is a do it yourself job or not.

Assume take it out, strip the wires and reattach. Can't be harder than changing a light fixture or outlet in a house. Or is it? Realize care electrical systems are highly complex.

Thank you!

bvensko said...

You shouldn't have to strip any wires. There should be about 4-6 screws holding the blower motor in place and a wire harness that clips on. I would definitely take a look at removing it myself. If you can dismount the blower, then go buy a new one. If it seems too challenging to remove it, then you may have to check with a shop. Should be easy though. Good luck!

Anonymous said...

I tried to follow and make sure this isn't repeated. I have a 99 Jeep Cherokee. Had an issue w/ fan not blowing for about a day. Seems to be working now, only issue is all air comes out at one temp. slider for temp doesn't seem to change anything, but air still comes out. Does this sound like it could be the resistor? Thanks for the help.

bvensko said...

Sounds exactly like the resistor. By chance is it stuck with only the highest speed?

Anonymous said...

Thanks for posting this...a great help. I'm pretty sure this is my problem so I'm going to change it out before I do anything else. One question though...is the wiring harness easy to disconnect and re-connect to the new resistor or is there a trick to it?

bvensko said...

In response to Post 10/12/2009 1:34 PM.

The harness is very easy to take off from the resistor. It is similar to the clip style you would see on a headlight bulb.

Anonymous said...

Anybody know what the blower fuse is labeled as? I have a 2000 Jeep Grand cherokee.

Anonymous said...

Thanks for this post! My 02 Grand Cherokee blows air but it is freezing! Worked fine last winter but now only blows cold air, do you have any suggestions?

Anonymous said...

Great job on the info here...
My resistor is good, but the connector on the resistor and the harness connector are both somewhat melted on the two outside conductors. I'm pulling it out today (cutting the harness free), as well as pulling out the resistor/connector, and soldering the wire connections, thus getting rid of the crappy connection point. I'll be crimping the harness conductors back together with butt splices. I'll let you know how it works out for me.
Thinking of inline fuses on each conductor though... if I get melting wires after this, that's probably the next step, or engineer a totally different solution from scratch. If jeep won't engineer it properly, I will.

James said...

What a great guide, my blower works again. Dealer wanted to charge me over $100 to fix this problem and I did it for $10. Thanks for making this guide, very easy to follow and it saved me a bundle!

Anonymous said...

Is the HVAC blower motor easily replaced on a 2005 GC? Some literature refers to removing the accumulator and evacuating the coolant but the blower unit looks very accessible after I removed the glove box and kick plate. If anyone has done it, I'd appreciate the advice rather than spending big bucks at the dealer.
Danny

kube82 said...

great post, didn't know why the blower wouldn't work on all speeds now i do. wire is a bit melted by the harness and caused all the trouble. should i buy the harness and resistor and put the new harness on and heat shrink wrap that baby? please advise.

bvensko said...

@ Kube82, I would definitely replace the wire harness. If you have shrink tube, it couldn't hurt to add it. Personally, I would look for the source that caused it to melt. Is there evidence that something else touched the wire or did the wire itself start melting? Just make sure it is well insulated and protected from anything that could recreate the same incident.

bvensko said...

In response to Danny October 26, 2009 7:51 PM

I never had to take the blower off to replace it, but I imagine the HVAC lines should NOT be connected to the actual blower motor. The HVAC lines are connected to an AC compressor that is connected to your pulley/belt system. This is just my opinion, but I think they suggest draining the refrigerant as a safety precaution.

Anonymous said...

Thanks a lot for posting. You would think that with all the people with the same problem that jeep would do something different. mine was completely burnt away. Took about 10 minutes, the hardest part was replacing the glove compartment. Thanks again.

JCrane said...

I know you've gotten a ton of thanks already, but I wanted to send thanks again! We've had this problem for a few months but I was hesitant to take it to the dealer because their repair jobs are usually upwards of $150. I found your blog, paid $6.95 for the part at the dealer, and fixed the problem in 15 minutes. Thank you so much for taking the time to do this!

Brandon said...

SO,
Yes, on my 97 Grand, today I fixed the vacuum line, which made the air blow where its supposed to, and not just through defroster. Also, On the 4th speed, it was NOT the resistor, but some wiring had gotten hot and melted together; had to take apart the glove box and re-run the burnt wires. SO now, air working on all 4 settings, vacuum line replaced. Thanks!

Anonymous said...

fixed the problem in 10 minutes, thank you for the info!!

chad said...

bvensko thank you so much for posting this "how to repair jeep grand cherokee blower resistor tutorial. I went to the dealership and they wanted to charge me 205 dollars for this 15 minute job. I purchase the part for 11 dollars and follow your instructions and all the heat/air levels work perfectly now:) thanks again:)
Chad

Adam said...

I have a 2000 Jeep Cherokee Sport, and the resistor is a bit different as well as removing it. The blower had faded from just High, to None at all. I hope it's still just the resistor problem. I got the glove box off and I'm trying to gather the tools to remove the resistor with out removing the entire dashboard, which is what the instructions I found online said to do. Any help, especially pictures of a bad resistor for this model would really make my day. It's been a cold winter in NY with out the heat blowing and ability to see out the windows.

bvensko said...

Adam - You said that other instructions tell you to take off the entire dash? Have you tried to just take off the glove box yet? It will take but a couple minutes and pop a flash light behind. Look for your blower motor and the resistor will be mounted to the firewall very near to the blower motor. Let me know how it works for ya. -Bob

andrea said...

Thank you for doing this! I will probably be able to fix this myself without help from my husband! I am tired of either freezing or sweating! No happy medium for me! I'll let you know how it goes!

Denis N. said...

Wow. That turned out to be an easy job with your advice!! Thanks so much. Also i was able to get the part online with shipping for under $11. Boom!

andrea said...

Thank you Thank you Thank you! I did this by myself last weekend! I am a 32 year old female and no body thought I could do it myself! The only problem I had was getting the wiring harness off the old resistor. It wasn't melted, it was just stuck. Even my husband couldn't get it! I eventually got it though and replaced the old resistor. I tested it and voila!!! All 4 settings work!

jimdory100 said...

Thank You !!!!

jimdory100 said...

Thank You!!!!!!!!!!!

bvensko said...

Andrea & Everyone else - Thanks for the comments! It is very rewarding to know that my little DYI has helped so many people! :)

Anonymous said...

Did this yesterday in the autozone parking lot. Glad you mentioned the torx size. How awesome are you for making this. Dealer wanted $180. Awesome job thanks a ton

Anonymous said...

Worked for me too. Had to replace the wiring harness also since one terminal was burnt out. Thanks.

Anonymous said...

You are a life saver, this was so easy. Got the part from Carquest for $7, dealer quoted me $42 for same part. I would change the description of how to get the glove compartment off, those two knobs on the top realese the box and it slides out. Took me 5 minutes!

You Rule

Luke, Denver

BD said...

Question....my heat is blowing, but it's stuck on the lowest setting. Could this be the same problem?

I have a 2006 JGC.

Anonymous said...

dude they were going to charge me 85 dollars to do this thanks you do what needs to be done make thing simple

Anonymous said...

Thanks so much! That was an easy fix! I ordered the part online for $12 including shipping since the dealer was charging $42!!! 10 minutes later all blower levels are working! Thanks again!

Anonymous said...

Can it be the blower resistor? My 2001 Jeep Grand Cherokee when the fan is on high for a long time it just turns off. If I turn it off for several minutes it will turn back on. Does not seem to do it on low. Did turn off at mid speed once. Most of the comments I've been reading seem to suggest this is a problem at low fan speed setting not high. Can it be the resistor?

bvensko said...

Reply to February 11, 2010 9:36 AM comment. I think it is possible that your resistor is starting to go. A free way to check would be to pull it out and see if it has a burnt appearance. If it does, most likely this is your cause. Also check for melted wire harnesses leading up to the resistor. Many members on this board have experienced this as well. Worst case scenario, spend $10 on the part and cross your fingers that it solves the problem. Otherwise it might be the blower motor itself (which is what I truly think the problem is unfortunately.)

bvensko said...

Reply to post February 23, 2010 3:41 PM.

Sounds more like the blower motor itself is going on you. You could check the resistor by pulling it out and checking for a burnt appearance resembling the one in the pictures I took. (comparing the new vs. the burnt out). Good luck!

Anonymous said...

OK...
I posted some time earlier about getting rid of the molex-type connector to the heater blower resistor... that's just what I did. the resistor was fine, but the 4-wire connector had major meltage. This is the weak point in the electrical path, so it makes sense to me to remove it. I removed the module, and cut the wire harness back about 6 to 8 inches from the module. I disconnected the cut-off harness from the module, then cut the wires as close to the module as I could get. I now had the module with 4 short (6-8 inches) color-coded wires. I then soldered the colored wires to the module at the harness connection points. I then simply spliced the wires back together with crimp on butt splices, and it work like a champ. This was a few months ago, and I recently checked it again... no signs of over heating or melting.
It's the crappy, loose connector that makes everything overheat and come unglued. Get rid of it.

bvensko said...

Thanks for the info! I think that is a good idea for those who have that issue with their JEeps.

Anonymous said...

A tad different (and easier to reach) on the 99... but I never would have found it without your post. Thank you!

Anonymous said...

THANK YOU SO MUCH FOR SHARING THIS INFORMATION AND UNBELIEVABLE INSTRUCTION!!! More of us should think to create instructions like this to share at no cost for any type of repairs. Instead we pay $$$ the big guy, who I'm sure really has no idea on how to really do the work, for instructions. THANKS AGIN!

jeffjharling said...

i'm going to try it now thank you very much, even if i have more problems than this your pics are great

Jeff Florida

Anonymous said...

This is also works for the Commander. Dealer quoted me at $325 for the resistor replacement. Picked up the part for $30.95 at the dealer and replaced it in 5 minutes. The repair is easier than you would think. Thanks for posting.

Anonymous said...

I did not see any response to the 2002 CGL guy who replaced the resistor and still had problems. I contacted many dealers as well after changing my own resistor to the chrysler updated style. They told me it was my blower, I have replaced that as well. The blower works on all settings,if you want to call it that. It acts like it is working, but there is very little air flow coming out of the vents.

Anonymous said...

I had this exact issue with my 2005 Jeep GC. The A/C would blow on high (4) only. Any other speed and it would cut out and I had to slam the glove box to make it come back on. Dealer had fixed it once under warranty (on third try), but the car has 88K miles on it now. This time ordered the part from RockAuto.com for $7.18 and swapped it out myself. It worked like a champ. Thanks!

Anonymous said...

2005 Jeep Grand Cherokee Laredo

I had this fixed 3 times at the Jeep dealer before I ran out of warranty. The car sat there all day each time.

The dealer wanted $47.50 for the part alone. Screw them. I over paid and got the part for $15.00 at autozone.

10 mins max to change it out this time. Took longer to drive to autozone than to change it out.

Thanks. You saved years of headaches. We have been driving around for two years switching the ac from full blast to off and back to full blast again. We can enjoy our Jeep again.

Thanks a ton!

Erwin said...

Do I need to disconnect the battery terminal in changing the blower resistor?

SteveW said...

First let me say a MASSIVE THANK YOU for this step by step!!! On our 2006 the fan settings (1-3)work every once in awhile, but always on high. Checked the resistor today and it looks exactly like your picture, so I'm gonna buy the part.

The connector has a burnt terminal "D". Saw the part for about $13, but do you know how to replace this. Anyone know if I need to cut wires or just pull them out?
(Can email you a pic if you want to see the connector)

Again, thanks so much!

Anonymous said...

I'm in the same boat as Adam, who posted some time back in January. I have a 2000 GC Lim with either a resistor problem or a bad wires. While you can get to the resistor, it looks completely different on the 2000. It's a large black box, which I'm assuming holds the actual resistor. There's a set of incoming wires that connect via a clip into the box, and also an outgoing set of wires that have a similar clip on the end that would plug into somewhere else. You can neither see where the incoming wires originate, nor where the outgoing wires plug into even if you remove the glovebox. Thus, perhaps the need to remove at least part of the dash. Any thoughts?

Michele said...

This was absolutely wonderful - thank you so much for posting:) My husband and I have been driving our jeep around for over a year, switching the air from full blast to off and back again. We didn't take it in because we assumed it would be very expensive. You just saved us tons of $$$ - I did this myself this morning:) Thanks again for taking the time - you sure have put great karma into the world, and I hope it comes back to you twice over.

Anonymous said...

Just a little different on my 99... also made sure the wires were all tight and works like a charm. Thanks so much for the write up!

Anonymous said...

I have a 2002 Jeep GC with the auto temp control.I replaced the blower motor controller (dealer calls it a resistor) New wires and new connector. Blower works with direct power. Connector was melted-worked for awhile after I wiggled the wires going to the connector. After the new parts were installed the blower doesn't work.
Fuses are good - swapped out just in case. What would you check next? Is their a relay? Another fuse that I am missing. Thanks, Dennis (grumpyden@yahoo.com)

Anonymous said...

Thanks for the Info, It was very helpful and turned what would have been an hour job for me into ten minutes.

Anonymous said...

Thanks for the detail photos. Helped me out a lot on my 05 Jeep GC. I replaced the resistor but then my blower motor went out. Heard its a common problem for the resistor to go out and then the blower motor. I got link here to a 05 GC service manual if anyone needs help fixing things. http://rs4.rapidshare.com/files/96058100/Jeep_Grand_Cherokee_Service_Manual_2005_Wk.rar

Anonymous said...

Thanks Great Info!!

Ashish said...

Thanks for the post, but I think my problem is he wire that hangs from underneath the glove box and connects to the resistor box is melted, how do I fix that?

Anonymous said...

My resistor is shot, leaving just the high selection. Just curious if its possible that the resistor, if left blowing on high, will interfere with the alternator charging the battery? Thanks for any help or thoughts.

Mike said...

Hi, i have a 99 grand cherokee, dual climate control. suddenly the vents can only blow a slight breeze of cool air (ie, no medium or high speeds). should i start with the resistor or something else?

thanks!

mike

Johnny V said...

WOW< hey this is GREAT! I have a 96 Jeep Grand Cherokee Larado, with the 4.0L V-6, I am having the Same problem, except on mine the High won't work. I get low and medium but high just cuts off. I wish I found this article before I went to the junk yard and wasted a day changing out the who Switch itself. Well, thats what I did (Sigh) needless to say, I still have the problem, which in turn brought me to this blog :)

MAN! I can not tell you how happy I am you wrote this! I was literally just driving home from a munchie attack and I was thinking how much the dealer was going to soak me to fix this! lol :)

There really can be no other problem, at least I hope. I am just wondering if its located in the same place on my "96" as it is on the one he worked on?

Well, GREAT ! BLOG Great Info! Great People !! ROck On Dude!

Johnny V :)

Anonymous said...

This was awesome advice...followed it step by step and worked like a charm...Thanx 2005 Grand Cherokee

Anonymous said...

I will be replacing the resisitor this weekend. Will this also get the lights to the heating/cooling knobs to also work?

Anonymous said...

Thank you so much for taking the time to post these pics and instructions.

cferrell said...

Sounds like you know your stuff. I am having a different problem but same area. So thanks for getting me into the right area...but, how do I get into the box where the fan is? "Squirrel cage"? I believe soome kind of critter, mouse or something, has gotten in and died. Stinks and the fan vibrates the whole dash. Still heats and cools but can't use it, for the vibration and smell. Supposed to get pretty cold here tomorrow. Thanks if you can help. And thanks if you can't.
Christy

cferrell said...

sounds like you know your stuff. Thanks for getting me into the right area, but my problem is a bit different. 2005 jeep grand cherokee, heat and air works, but the fan smells and the dash is vibrating pretty badly. Lotsa noise. I believe a "critter" has gotten in to the air co fan and died. I need to get into the squirrel cage and try to remove what is left of it. Supposed to be cold here tomorrow and if you can help in any way, I would deeply appreciate it. Thanks either way

Christy

cferrell said...

sorry thought the first one did not take... anyway. Thanks again
C

Anonymous said...

Thank YOU SO MUCH!

-2005 Jeep Grand Cher.

Blower only works on hi!!!!

The Wanderer said...

Thanks SO much for the post. I just checked and will have to replace the harness soon. I re-shaped the wires and have it working for now, but will order and replace the harness soon. I love how the internet lets people help other people all over the world. Thanks again.

Anonymous said...

Great post! Thanks so much for saving me a ton of time and money. My '05 Jeep GC has 92K miles on it and I treat it like a baby. But in the past two months I've had to replace the ignition switch (dash lights, headlights, blower and just about everything else except the engine were flashing on and off like crazy), starter, water pump and now the blower resistor. The parts guy at my Jeep dealer knows me by name!! This is my first and last Jeep product.

Cheryl said...

Thanks, we were able to change the resistor fairly easily following the photos. Unfortunately, one of the wires melted the harness to the old resistor making it a bit difficult to remove. The fan works good now, except for the 3rd speed, which is the burned wire. We will have to change the harness to remedy that. Any idea how difficult that will be? Also, the lights on the fan controls don't work. Do you know how to fix that as well?
Thanks for helping us out!

Lori said...

Wow...this fixed it and was SO easy, even for a girl that knows NOTHING about cars except how to stop for Full-service Gas! I got robbed by the Jeep Dealer in Lakewood NJ and they soaked me for $36 bucks for the part, but still cheaper than having them fix it!

Art said...

Great advice for do it yourselfers. Need more posts so we can avoid getting ripped off. Was amazed at the number of similar problems. I have a little different problem with my 2004 GC. My blower only blows on defrost. Cant get heat to my feet or torso. Any ideas>

Anonymous said...

My 2005 Jeep GC is only blowing cold air and the fan still seems to work on all 4 levels. Do you think it could be the blower doors are broke or the heating core? Any info would be greatly appreciated!

Anonymous said...

Thanks, have a 95 Cherokee, all looks very similar, only high fan then replaced resistor. Still the same. Have power at harness end, off, low, med, and hi. Can bridge harness and resistor and fan and all speeds work. Ideas?? THanks so much. David

Anonymous said...

Thanks for the step by step post... Going to try it this weekend. Should I disconnect the battery before starting the process?

Anonymous said...

Thanks for this post! Installed the new resistor and all is good.
The hardest part was removing the glove box. I agree with the earlier comment of pushing down and clearing the 2 stoppers. After that give the glove box a little hit (to unhinge). The glove box will come down and then just pull it off the rails.
Thanks again

Anonymous said...

you are awesome! the dealership told my husband they have never heard of this problem and it would take about 2 hrs at $75 plus the parts. But you saved us! Thanks!

doller_holler said...

I am so thrilled that I came across your post with these steps!!!! We were able to fix my 2000 Jeep Grand Cherokee Limited for $120.00.And less then 15 minutes..most of which was just to be sure to take the melted part out slowly. Thank You,Thank You.

Anonymous said...

Thank you very much bvensko!! I spent 20 bucks vs possibly 100+.

And thanks to Rick too for the glove compartment removal tip.

Isaiah said...

wow...this is incredible...thanks!

Carlos said...

i thought the resistor was a black piece with about 50 pins in it? now I am confused. I have a 2000 grand cherokee limited and my fan does not kick on. is the piece you changed behind it? thanks in advance. carlosjvelezjr@gmail.com

Carlos said...
This comment has been removed by the author.
Brady Cartee said...

Driving in a blazing heat is not a good thing, especially to those who are sensitive to heat. It's a good thing that you were able to fix your heater blower resistor, it must've been really worth it. It's amazing that you decided to tell these steps to repair the resistor; people who are having the same problem will certainly find these tips useful.

Anonymous said...

Man, I don't know why guys like you take the time to publish things like this, but I'm sure glad you did. God lead me to your article and showed me how to fix my 2005 Jeep GC even though it does not have the resistor, it had a module where your resistor was, and it fixed it! Thank you for taking the time to help your fellow man. May God richly bless you my friend!

Anonymous said...

Your article saved me money and time, most definitely. Thanks a million for posting.

Anonymous said...

Hey , Thanks for the pictures. They really helped a lot. I have an 05 Jeep GC. I got the blower resistor at my local Advance Auto store, it was only $8.65 including tax. They had to order it, but if you get in early enough they can have it the next day. Thanks again, you saved me a ton of money-I can only imagine what the Jeep dealership would have charged for this.

Anonymous said...

There's a panel under the glove box, can you access this way to replace the resistor ?

bdonovan8407 said...

I must say that this blog didnt entirely solve the problem I was having with my 2006 Jeep Grand Cherokee, but it helped me get to the solution.

I replaced the resistor, and it probably needed to be.

The blower wasnt working even after replacing the resistor. I double-checked the relay fuses or plugs under the hood and found the problem. It was the HVAC relay.

Total cost $10 for the resistor and $6 for relay.

$16 and 1 hour later, helped me save probably $500 by doing it myself!

Thanks for having this blog or I never would have thought to do it myself!

Anonymous said...

thank you very much

Anonymous said...

Great post!! Changed mine 30 minutes ago and went very smooth


Thanks Alot,
RH

Anonymous said...

Thank you so much, we just got our 2005 JGC, and I love it, but HATE riding with full-blasted A/C!! We freeze!! This will help so much, that is exactly what our climate controls are doing, I will have my husband do it. Thanks so much again!!

Anonymous said...

You sound very knowledgeable,Im having so much trouble with my dash lights coming on randomly and gauges quit working while driving. Happens after about 15 mins of driving. Just before it happens there is a clicking from the lower left side. Took in to Jeep dealership and cannot find problem. Can't afford anymore so hopefully you have an idea on what the problem might be. Anything would help. Thanks

Anonymous said...

Hi I have a 2001 jeep GC with climate control,and my wiring is all burned up at the firewall, I cant find the resistor i removed the glovebox and the side panel and I see a big nada.any sugestions ?

Anonymous said...

Hi, I just replaced the resistor today. It was a breeze. I did notice some black on the wire harness clip. Hopefully that wont cause the resistor to blow again. But anyway it works and we are happy to have saved a ton of money.

Thank you
Mike - Naples FL

wayne said...

Thanx so much for this post. I have not tried it yet, but I sure am grateful for you posting this. It's about 90 degrees right now in upstate NY so I think I will wait until tomorrow. I will let you know how it goes. Thanx again!
Wayne

Anonymous said...

Thanks for the great info and pictures to go with it.
Your a true hero.
God bless you.

Anonymous said...

Nice! More than 3 years later and you're still helping people out with this! Thanks SO much for posting the solution to this problem. Made switching out the part as simple as it can be - less than 10 minutes of work. You're a rockstar!

Alex B said...

I have 2001 Jeep Cherokee Laredo. 10amp fuse hase blown controling blower motor. Replaced the fuse and it blew right away. I replaced the resistor and it ran fine for a couple minutes of driving then blew fuse again. I replaced the blower motor and again it ran fine. It lasted 2 days and the fuse has blown again. Any ideas all connection look good, my next step is wire harness. How do I remove this harness? is it the harness from resistor to manual temp switch or from resistor to fan motor. Also where do I get this harness? Dealer Part?

bvensko said...

@Alex B

Sounds like you have one or more wires grounding out, causing the short and constantly blowing fuses. I wouldn't keep replacing them, as they will continue to blow.

The most common cause of this is metal contact with your wire harness. If the wire harness is not protected by a plastic loom, it could rub against sharp metal on your firewall. The second it touches metal, it will ground and blow the fuse. It may also be that your harness melted and two wires are touching.

The solution would be to check online for a new wire harness. You could check a dealer, but for this part, you will probably pay 4x the price. I would recommend that you find by searching the internet.

-Bobby

Anonymous said...

i just did all that and again it didnt start at all what do u think it is

Chris said...

Hi, pretty straight forward diy you got there i was hoping you could give me a hand with a 2000 jeep cherokee laredo. the fan stops working checked fuses and found the fuse for heater/ac control blown its a 10 amp fuse also shared in that fuse are your turn signals ive read online its common for the flasher relay to have a crack in the solder so i replaced that..everything ok. driving with fans on intermittently the same fuse blows again, i go and pull out the resistor corrosion everywhere, i replaced that part and it costed 188 dollars (manual hvac) everything runs golden. so im driving and right when i throw the car into park hvac shuts off signals stopped working and when i pull the fuse out its blown.. sorry for the long story but any help would be great. chris

Anonymous said...

Hi this is a very helpful blog. My daughter just spent $250 to get her A/C blower working, they said they replaced the blower. But her symptoms sound as if the was the resistor or something, Now the blower runs, you can hear it changing speeds, but same amount of low air flow comes from the vents all the time. The shop now want $600 to remove the dash and investigate further. We said no and will wait for a reply so we do it ourselves. Thanks

Mike said...

Hi. This information is very helpful and looks like it has helped many people. I have one problem....I have a 1999 Jeep Grand Cherokee and recently replaced the blowere resistor due to losing all speeds on the blower. It also had a melted plug. However, like one person wrote, my blower sounds like it is working overtime and literally shakes the car on high speed but the air barely comes out of the vents. The dealer sold me a resistor and said it's part number replaced my old one. The new one has much longer metal "fingers" than my old one. On auto parts websites it shows this new resistor for 2002-2005. Mine is a 1999. So do I need a different resistor exactly like my old one or did I put it in backwards or something? I have very little air blowing out on high speed. Help!

K. Forbes said...

Hello All! My 2006 JGC had been making a weird noise from the A/C. It sounded like a turkey was in there. Then gradually my fan speeds went 1 by 1 until all I had left was the high speed. Then one day, I turned it on, it made a very loud noise as stopped. It even smelled a little burnt. I replace the blower motor resistor ($30) and tried to start it but no go. That weird noise I'm guessing is the fan? It used to come from the vent on the passenger side. Can anyone help?

vanhuscs said...

I'm having the same exact problem as K.Forbes. My fan started making a weird sound, I then smelt a chemical like smell and when I turned the car off and later went to start it up again, I have no heater or AC. There is no air at all. I'm looking for any advice! I also have a 2006 JGC. Is this something that can be replaced as easily as the resistor?

K. Forbes said...

So today brought something different. Replaced the resistor although the previous one wasn't burned out. Now I get air but like a previous post, it's very faint. I'm glad it's doing that much but it's not back to normal. I do have a transmission fluid leak that I'm about to get fixed. They said it's a leak that leads to the radiator. Would that have any effect on my a/c? Just want to know before I go back in fiddling with things.

Warren said...

I appreciate this info as it gave me a direction to follow. Its important to know that the 2004 GC uses a different resistor than the one mentioned here. Also, on the 2004 the resistor is accessible from under the glovebox with a phillips head screw (not behind it). The dealer quoted $140 plus $20 for a wiring harness so I paid $50 online for just the resistor and made the fix in 10 minutes. My daughter thanks you and so do I!!!!!!!!!!

Anonymous said...

I haven't checked my resistor yet but im sure it is the problem. Just wanted to say this is the best step-by-step i have ever seen online, thank you so much!

Anonymous said...

Thanks for your help. Excellent instruction. But, can you show us how to replace the bad harness too (it has melted terminal and insulation on thick blue wire). 2nd resistor replaced on 2005 JGC.
Thank you.

Anonymous said...

If you live anywhere Jersey City NJ, I can help you, I have already done a few Jeeps with all these similar problems. Call me 201.844.5376

James Loud said...

I have a 2004 Jeep Grand Cherokee Limited. My heater seems to work fine, but my air conditioning only works some of the time. It will blow occasionally, then randomly shut off. When I am driving at a pretty decent speed and I do not have the re-circulating air button pushed, the air will come through pretty decent. I am looking to find a way to fix my aic conditioning so that it blows at high, or low or whatever I choose, and does not stop blowing and start blowing again randomly. Do you think that replacing this resistor will fix this issue?

Anonymous said...

2006 GC just wiggeled the wire harness and all speeds working again thank you so much

Caroline said...

I just wanted to post a note to say THANK YOU! THANK YOU! THANK YOU! Thanks so much for posting this. I called two dealerships today and the average quote was $425 for pars and labor to replace the Heater Blower Resistor. WHAT IN THE WORLD??? Does that come with a flat screen TV as well I asked?? Anyway, I went out on my lunch hour today, purchased a new Heater Blower Resistor from Auto-Zone for $11.99 plus tax and installed it within 15 minutes and it works PERFECTLY!!! I have had this problem for 3 years, and thanks to you, I have resolved the problem and have saved an enormous amount of time and hard earned money in the process! Thanks again! Caroline :)

Anonymous said...

Reading through some of the posts it seems like this is a great resource! I have a 2001 grand cherokee limited and am having trouble actually finding the blower motor resistor. I followed your instructions and took off the glove box but the only electrical device I found back there was something to do with the vents. Any chance the resistor is under the glove box, and if so, any idea of where it might be? Thank you!!

Kim said...

I have a 2000 Jeep GC Limited. The resistor is underneath the glove box. My heat/blower was going on and off now and then. When I wiggle the resistor wires, the heat/blower works. When I stop, the heat/blower stops. Any idea if replacing the resistor will fix my problem? Any help is greatly appreciated, trying to sell this jeep with working heat. Thanks a bunch.

Anonymous said...

You saved the day again! Thank you for the info - easy to follow - part did cost $32 for me.

Anonymous said...

Worked for me! Thanks for the info!

Anonymous said...

This has been a success, Thank You!
On the 2005 Jeep Grand, I was able to lower the glove box without removing it completly, depressing the hinge stops on both sides alloed the glove box door to lower position, giving me ample access to the resistor & replacement.
Excellent Resource you have posted, saved me much time and money, Thanks You! Tracy in Olympia,wa

Anonymous said...

Great Info. God bless you!
Jern

Tricia said...

This info was great, thanks a bunch! Unfortunately, it looks like I will have to replace the connector/harness too since two of the terminals are burned. Is this difficult to do? I feel like it might be out of my range.

Anonymous said...

This is to the post's that said they changed the resistor and now the blower motor sounds fine but little air comin out. This is how I fixed my 04 gc. The new resistor was good but I found out that the wires in the harness that connects the resistor to the blower were backwards, causing the blower to still run but running backwards must be a resistor factory defect. So after disconnecting negative battery cable I cut the wires in that harness and swapped them. I believe both wires are black but just for example the red wire now connects to black and black now to red. I used wire nuts and elec. tape. Connected battery and it works great. So after a year and two dealers say they're clueless I fixed it. Hope this helps someone else.

tmohn said...

I have had the same problem on my 2002 GC. Repair shop bought new oem from jeep dealership and the connector was wired backwards so motor turned backwards...no flow. I tried to tell dealership to put out bulletin about their replacement resistors but was told by the service department that they did not have a MECHANISM to do that within the corporation. Maybe why so many people buy Honda Pilots. :-)

MrJimVegas said...
This comment has been removed by the author.
MrJimVegas said...

My fan stopped working two days ago, I read your post and followed the steps. I had the old one out and the new one in in ten minutes. We have the Limited 5.7 Hemi which has a four prong plug and a two prong plug. $108 at the dealer i could not find this resistor in after market.This was so easy to replace, im sure the dealer would have charged over $200 to replace. Thank you for your step by step photos etc. Jim.

Thilak said...

My Friend how can I buy blower resistor ? and price?

Anonymous said...

Excellent post! All my blower settings work perfectly now! Do you also have a post on where to buy the new glove box I broke following your instructions?

Anonymous said...

2004 Grand Jeep v8 4.7. If I had power to Blower Motor Module and not now. Any Ideas? have checked all fuse they are good. Not sure how to check relay for good or bad.

Anonymous said...

Thanks for the info, I just called about the resistor...$190.00..It's a friend jeep, And i can't see spending that on something so simple. Gonna take it out and make sure it's the problem and if it is I'll have a fix for it.

bvensko said...

For the part? Or to do the work? The part is less than ten bucks.

bvensko said...

For the part? Or to do the work? The part is less than ten bucks.

Anonymous said...

Just for the part, Gonna call a jeep dealer today, I think they will actually know what I'm asking for.Have a feeling the place I called qouted me for the entire blower, Even tho I called twice. But this is canada eh..

Anonymous said...

Just for the part, Gonna call a jeep dealer today, I think they will actually know what I'm asking for.Have a feeling the place I called qouted me for the entire blower, Even tho I called twice. But this is canada eh..

Anonymous said...

For a 2001 The best price I can get is $167, Just to compare I gave them the 2005 part # and it was $60. I'd like to take it apart and just change the resistor itself. I have electronic's background so it should'nt be that hard. Hopfully I can read the resistor for the ohm's and wattage..

Anonymous said...

Bang on diagnosis. It cost me a little more here in Alberta Canada ($50 for the resister and $29 for the wiring harness) but you were absolutely right about the cause of the problem in my 2005 Jeep Cherokee. Thank you very much for your post.
Adrian 11 May 2012

Anonymous said...

You are awesome, thank you. These how to guides with pix from real people help immensely.

Anonymous said...

Thanks for the great directions! Took my husband about 20 minutes and the hardest part was taking the glove box off. Saved us 100 dollars.

Anonymous said...

They reason that after installing my new resistor the fan barely blew was because the wire from the fan to the new resistor was not made correctly. the wires were swapped in the connector causing the fan to spin backwards and thus barely putting any air out. hope this headache that i went through helps yall.

Ebeldennis said...

I have a 2005 Grand Cherokee , the problem I'm having is the blower never turns off. It seems like I have two speeds of blower , but will not turn off with the selector switch. ( the switch does turn off ac but not the blower ) I have the auto temp controls. I have checked relays under the hood, and none are stuck. Do you think that the resistor could be bad, or harness melted? Or should I look in another direction.

Anonymous said...

Thank you Anonymous. The wires are swapped. Changed it around and works perfect!

Courtney C. said...

You are my hero right now! Your #1 fan is in quincy mass!! -Courtney

Fixed it in 20mins (in the dark!) Lol

bvensko said...

@ Courtney C.

Haha awesome! Glad I could help.

Anonymous said...

My sisters GC was having this same problem and she asked if I could fix it.I did a quick google search,found your tutorial. $13.47 ,15 minutes and your help---DONE.Thank you!!!!!! Erik

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