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Jeep Grand Cherokee A/C Heating Ventilation

407 messages,  Last post on Feb 21, 2010 at 5:57 AM

You are in the Jeep Cherokee and Jeep Grand Cherokee Forum. Your Hosts are steve_ & tidester

What is this discussion about? Jeep Grand Cherokee, Heating / Cooling, SUV


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#91 of 407
2001 Grand Cherokee fan runs after shifting into 4 wheel drive by savagejeep
Feb 25, 2007 (1:05 pm)
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Hi we have a similar problem to those that have already posted! However, a little quirker than the previous posts! The cooling fan stays on continously only after shifting into 4 wheel drive while stopped (not on the fly).
 
We had to jump the car because the fan caused the battery to die. Then we noticed that when we removed the cooling fan relay that the lowbeams did not work. However, once we replaced the relay with a new one and took the car out of 4 wheel drive (on the fly) the lowbeams once again worked and the cooling fan turns off!
 
Does anyone know if the relay has to do with either the shifting of the 4 wheel drive or the lowbeams?? Also has anyone who owns a 2001 grand cherokee found a good website with diagnostic codes. If so I would appreciate the info!!
 
Thanks,
 
Mark
#92 of 407
Re: 2001 Grand Cherokee fan runs after shifting into 4 wheel drive [savagej by champ218
Mar 01, 2007 (4:21 pm)
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Replying to: savagejeep (Feb 25, 2007 1:05 pm)

Here is a link to fault codes for the GJC:
http://www.wjjeeps.com/faultcodes.htm
 
As far as the problem with the cooling fan staying on after the car is shut off, I had the same problem a while back. Now the cooling fan wont turn on at all. I took it to a diagnostics place and they said it was my Powertrain Control Module (PCM) Hope this helps everyone out.
#93 of 407
Re: COOLING FAN NOT TURNING OFF [bbernander] by pahefner01
Mar 08, 2007 (9:11 pm)
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Replying to: bbernander (Jun 10, 2006 8:04 pm)

Another participant that thinks you should check the relay. There are not that expensive and cheap insurance against overheating.
#94 of 407
Re: COOLING FAN NOT TURNING OFF [pahefner01] by pahefner01
Mar 14, 2007 (7:29 pm)
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Replying to: pahefner01 (Mar 08, 2007 9:11 pm)

I would also check the relays under the hood first. They are not expensive, easy to get to and fail at a rather alarming rate.
#95 of 407
Re: Fan comes on when 2003 Saturn L Series is cranked! [susanproctor1] by saturncat
Apr 03, 2007 (1:10 am)
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Replying to: susanproctor1 (Feb 08, 2007 8:53 am)

If it's defective, then perhaps the dealership will fix it for free. The warranty ran out a YEAR ago...and I have been having numerous problems ever since. The closest dealership to me is about 40 miles away. I doubt I will buy another car where there is no local dealership!
 
Thanks for the info.
#96 of 407
Re: COOLING FAN NOT TURNING OFF [quadring] by spider16
Apr 26, 2007 (6:20 am)
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Replying to: quadring (Sep 30, 2006 7:21 pm)

Can you give any dimensions / coordinates for where to cut the hole to access the relay? how large a hole?
#97 of 407
Re: COOLING FAN NOT TURNING OFF [tidester] by skippytcg
May 22, 2007 (6:41 pm)
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Replying to: tidester (Jun 10, 2006 10:31 pm)

I was in another forum and they said there is a relay located by the passenger headlamp. they said it is a little bit of a pain to get to but that may help.
#98 of 407
Re: COOLING FAN NOT TURNING OFF [spider16] by tuggajb
May 22, 2007 (6:51 pm)
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Replying to: spider16 (Apr 26, 2007 6:20 am)

link to photos of relay replace ment
 
http://www.carspace.com/billnick/Albums/Jeep%20Overheat%20Fix%20Fan%20Relay%20Re- /
#99 of 407
Re: COOLING FAN NOT TURNING OFF [skippytcg] by spider16
May 22, 2007 (8:04 pm)
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Replying to: skippytcg (May 22, 2007 6:41 pm)

That is the secret. The fan relay is located under the passenger headlight. i just replaced mine . Problem solved. The trick is you must remove the headlight then cut about a 3 inch round hole in the shroud under the light to access the relay. The engineers strike again.Just use a hole saw and you can leave the hole open after finished.If you need more info contact me.
#100 of 407
Re: COOLING FAN NOT TURNING OFF [bbernander] by kzoojeep
Jun 01, 2007 (2:33 pm)
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Replying to: bbernander (Jun 10, 2006 8:04 pm)

Easy fix it's the fan relaycontrol module(AKA relay) behind the front bumper on the passenger side. very common problem the hardest part is getting to it, you have to remove the front bumper to do the repair.

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