Question about 2000 Jeep Grand Cherokee

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I Jeep Cheroke is overheating and the Radiator Fan is not working. Where do i find the relay for radiator fan.

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  • 106 Answers

It will be under the passenger side headlight.
Access two different ways
1. Remove headlight and cut hole to find
2. Remove bumper and grill assembly

#1 is much easier....let me know if you want detailed instructions on how to access it this way

Posted on Jul 22, 2010

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Where is the position of radiator fan relay on jeep liberty 2006


no idea to be honest earlier jeeps had then at the front of the wing down below as i remember ?? newer one would i imagine be in the electrical box under the bonnet near the battery

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Jeep keeps overheating replaced relay


A mechanic would use a scanner to check the engine temp sensor.
The temp sensor tells the computer what the engine temp is and the computer activates the fan relay when the temp reaches about 230 degrees.
Since you said relay I am assuming your Jeep has an electric radiator fan.

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1999 Jeep Cherokee Sport wont shift into overdrive P1491


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When monitored: with the ignition key on, battery voltage greater than 10.0 volts and
the pcm requests the radiator fan to be turned on.
Set condition: an open or shorted circuit is detected in the radiator fan relay control
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Possible causes
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Check ot and keep us updared.

Oct 15, 2011 | 1999 Jeep Cherokee

2 Answers

It overheats when in traffic ior when it is idling


I have fixed my own 2002 Jeep Cherokee twice for the overheating issue. Overheating can be caused by a number of different problems, but one of the most notorious problems for the Jeep is the 'radiator fan relay switch'. When the temperature thermostat goes over 210, it tells the relay switch to turn on the radiator fan to cool down the engine. If that relay switch isn't working, the fan never turns on and thus your engine overheats. Here's a simple test to check if this is your overheating problem:
1. Start up your Jeep, open the hood, and let it run to the point where the temperature gauge on your dashboard creeps past 210.
2. Once it goes past 210, go over to the engine and see if the radiator fan kicked on. (the radiator fan is right behind the grill, circular with big plastic blades) If yes, then the relay switch is working. If no, then you probably need to replace the relay switch or the radiator fan motor is bad. But more than likely, it's the notorious relay switch.
3. Turn off the Jeep asap to avoid damaging the engine.

You can purchase a 'radiator fan relay switch' from most Jeep dealerships if they have a service dept. It should be around $75.
(I saved over $700 by not taking my Jeep to an auto shop to fix this) To change out the relay switch, you need to take off the passenger side front headlight. There's a black plastic guard behind the headlight and the relay switch is located under/behind that guard. If your Jeep ever experienced this problem before, you may see a cut-out where someone replaced this part before. If there's no cut-out, you can check out this link to see a picture of where to cut.
http://rigs.corequipment.com/cebby_WJsite/cooling.htm#relay

Once you switch out the part, you should be golden.

Mar 24, 2011 | 2003 Jeep Grand Cherokee

1 Answer

2000 jeep grand cherokee is overheating, replaced the radiator, face works, water pump seems to be working, replaced the fan relay. thinking of replacing the thermostat and wondering what it could be if...


If the fans don't come on to cool the radiator then maybe it's the thermal fan switch, which sends the turn on signal to the fan relay, that might be bad.

Nov 22, 2010 | 2000 Jeep Grand Cherokee

1 Answer

Radiator overheated and busted open, we bought a new radiator and the fan isn't working , also put a new relay on, and the fan isn't working. What next?


Did you check the temp sending unit? That tells the computer what the temp is and the computer then triggers the relay. Also, hot wire the fan motor and make sure it runs when it has power.
As far as the radiator "busting open" if it actually did that and didn't just develop a leak, it may indicate a head gasket failure pressurizing the radiator far more than it's normal capacity.

Jun 06, 2010 | 2000 Jeep Grand Cherokee

1 Answer

Overheating and radiator fan not coming on


One of two possible problems.

1. Faulty fan (replace fan)
2. Faulty fan relay (replace fan relay, about $45 DIY)
let me know if you want instructions on fan relay

Apr 21, 2010 | 2002 Jeep Liberty

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2004 jeep grand cherokee overheating


check the thermostat or your radiator might be stopped up

Apr 14, 2010 | 2004 Jeep Grand Cherokee

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2001 Jeep Grand Cherokee- fan that sits closest to radiator


Have you tested the fan sending unit on the engine? disconnect that and if the fan runs (Key on) that is most likely the problem.

Oct 17, 2008 | 2001 Jeep Grand Cherokee

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