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violant00 08-05-2011 04:36 PM

Radiator Fan not working wj 2000
With the fan not being on, the jeep starts overheating it used to come on now it just doesn't at all.

any ideas? should i just replace the whole unit or is this a common problem.

99PlatinumWJ 08-05-2011 06:11 PM

Re: Radiator Fan not working wj 2000
I replaced my fan motor and the relay under the passenger headlight and my fan works now.. On 90+ days tho it still will run at 220-230+... Not sure if this is normal, I hope I don't need to replace the radiator.
Anyway the relay is a common problem for going out so look into that I'd say

StoneCold 08-05-2011 06:12 PM

Re: Radiator Fan not working wj 2000
I know with my xj (4.0), the fan stopped working and we were able to hook up the battery to the fan motor and determine that it was the thermostat that was busted. It's worth trying that first I'd say.

violant00 08-05-2011 07:51 PM

Re: Radiator Fan not working wj 2000
just replaced the thermo and flushed the radiator so im gonna try the relaY and see where it goes

Gus9890 08-08-2011 01:20 PM

Re: Radiator Fan not working wj 2000
I had a problem with mine not shutting off on my '01. Looked into it and it's a normal wear problem in which the fan either won't stop running or it won't run at all. It's the relay. I replaced it and it's been fine ever since.

2005JGC 08-11-2011 03:11 AM

Re: Radiator Fan not working wj 2000
On the 04 i think it actually went to a relay (or relays hi lo? ) in the PDC, earlier vehicles uses a pcm controlled relay that is under the passanger headlamp. a dremel tool will clear the plastic out of the way in no time and I believe 2 8mm screws hold it in. VERY common failure... I have also seen some fans fail and kill the relay, actually most of the repairs in my memory right now had bad fans... The fan can be jumped directly to the battery to test, if it doesnt spin or struggles its bad. the relay has a power, ground, pcm control (to ground IIRC), and output to the fan, at the dealer I hook the DRBIII up and actuate the fan and verify I have all 4 of those at the relay, it would be tougher without actually being able to actuate it as you would need to warm the vehicle up and look for output. LIKELY its your relay, but it could very well be your fan too. and POSSIBLY it could be something else completely.

Gus9890 08-15-2011 01:25 PM

Re: Radiator Fan not working wj 2000
I've heard peoples relays in these different places, mine is accessed via the rear of the fender well on the front passenger side of my '01 Limited

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