Question about 2002 Jeep Grand Cherokee

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2002 jeep cherokee overheating AGAIN

Just changed the fan relay modules and the thermostat yesterday and it is overheating again today... why???

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  • sunflowerjen May 25, 2009

    i flushed the cooling system yesterday too....

  • sunflowerjen May 25, 2009

    seans46, yes to both

  • sean cox
    sean cox May 11, 2010

    You have no leaks ? And the truck runs great except for the over heating ? . you flushed it so you know their are no blocks. So if you went to the truck now and started it up it would run normal , once it reached above operating temp the fans come on like they should yet the truck just contiues to get hot ? is that right? has the water pump been replaced ? and have you used a temp gauge to verify the actual over heating and not just a sensor or gauge ?

  • sean cox
    sean cox May 11, 2010

    Are the fans coming on like they are suspose to with out the A/C on ? Do they come on with the a/c ? has the water pump been replaced ? when you replaced the thermostat did you make sure the thermostat opened and topped it off and no air in system?

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  • 48 Answers

You say you changed the fan relay and the thermostat? when was the last time you had the cooling system flushed? you could have a blockage in your cooling system that could be keeping the coolant from circulating..

Posted on May 25, 2009

  • Jody DeVogel May 25, 2009

    You flushed the system and is it still overheating?

  • mal predl Sep 24, 2013

    i have a 2002 overland and quite frankly i am angry that jeep themselves don t offer help in this area. My jeep just started overheating and after a new heat sensor a new relay a new thermostat a new water pump i am now forced to by passing the computer an installing a sensor which bypasses the computer which is the problem. Shame on you jeep for not helping thousands of people with this problem, Mal.

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