Question about 2001 Jeep Grand Cherokee

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2003 Jeep Grand Cherokee

I replaced the battery now the fan behind the radiator will not shut off. Had to disconnect the battery. Noticed when trying to jump start prior to replacing battery fan came on. The Radiator fan will not shut off i have to disconect the battery when i shut the car off so the battery does not die.

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Pulled the fuse it stopped, put it back it started again. Tapped relay area and it stopped. Battery was 3 or 4 years old, so was ready to be replaced anyway. Above solution worked.

Posted on Feb 08, 2009

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Likely, you did not need a battery....It probably died because of the fan problem... Most common cause is the fan relay sticking in the "on" position. Relays are generally found in a plastic box on the right side fender well in the engine bay. Box is labeled on inside. Pull the relay and the fan should stop. If it does, replace the relay.

Posted on Dec 12, 2008

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Find relay and give it a tap, to see if that helps. Not sure on that if its along drivers fender under hood or not, but listen for click from small 1"x1" roughly relay attached somewhere in engine compartment area, firewall, fender area.

Posted on Dec 12, 2008

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2003 Jeep Grand Cheeroke radiator fan runs when car is off draining battery. Could it be the relay? If yes is the relay in the fuse/relay box under the hood or under the passenger headlight?


After checking the conventional relays and fuses, we found an additional auxiliary cooling fan relay behind the front bumper. Once replaced, all is well.

The fan relay is likely shorted and keeping the fan motor energized; to check this you can remove the relays from the fuse panel... remove the cooling fan rely from the underhood PDC (Power Distribution Center). Fot this and additional fuse details, check this link: wjjeeps.com/fuses.htm

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Where is this fan located and what does it cool?

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