2001 Jeep Grand cherokee cooling fan runs on

http://www.jeepforum.com/forum/f310/fan-relay-location-2004-wj-4-0-a-1370578

Transmission sticks in reverse- won't go into park. - JeepsUnlimited

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Jun 14, 2013 - 12 posts - ‎5 authors 2003 6 cyl 4x4 Grand Cherokee Laredo automatic- Occaionally, when shifting from REVERSE TO PARK, my Jeep will stay in reverse. Typically its ... '2001 WJ'4,0L'42RE'NV 242'380000 km'ECE Compliant' ??????????? ??? ...

2001 jeep grand Cherokee laredo - CarGurus

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CarGurusJan 27, 2014 - 2001 jeep grand Cherokee laredo - Just purchased a 2001 Jeep GrandCherokee Laredo and ... It starts in PARK sometimes and sometimes it won't and I have to start it in Neutral. ... Hatch shuts flush, but won't stay shut. help!

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Could be either one, but usually its the fan motor.
You can run a wire direct from the battery to bypass the relay to see how fast the fan is able to run. The connector on the fan relay can become damaged too.

Sounds like your cooling fan relay is bad the jeep grand cherokees are known for this, first thing i would do is unplug the radiator cooling fan and run 2 jumper wires direct from the battery to the fan connector if the fan kicks on your fan motor is good and the relay is bad, if the fan doesnt kick on replace the fan motor with a new unit, the cooling fan relay on your particular model jeep is located under the passenger headlight and requires you remove the front bumper to replace it, however some people cut a small hole under the headlight to access the relay the faster way but if your not to keen on cutting holes in your car remove the bumper and replace the relay if the fan checks out and you wont be overheating anymore...

It is possible that there is a bad temperature sensor. Have it put on a diagnostic machine and possibly reset all codes.

bad water pump maybe or thermstat is froze shut. maybe the cooling fans are not working.

Sounds like a short.

relay sounds stuck...call a parts store for pricing

Here is what I have on the wiring for the Jeep you never mentioned what model of Jeep you actually Have if this information is helpful please give me a fixya! Rating Thank you, Randy