Question about 2001 Jeep Grand Cherokee

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2001 Laredo overheating

Its not the water pump, radiator, or the thermostat. what else could it be. turning the heater on does not help while sitting still.

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  • ashnmax Jan 10, 2009

    well how do you fix that and now that we just changed the thermostat, the heater has stopped working. any clues!!!

  • ashnmax Jan 10, 2009

    thanks you very much i hope we figure this out soon....

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Could be the fan(make sure it's working)If not it could be the tempature sensor,bad fan motor,or fuse.

Or worst case a blown head gasket,cracked head or block
(but I would check for Fan issues first).

Posted on Jan 10, 2009

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It sounds like you have changed everthing already. It could be an airpocket in the cooling system.

Posted on Jan 10, 2009

  • Scott  Moore
    Scott Moore Jan 10, 2009

    if you're getting heat while driving, and then it goes cold while sitting. i feel like its an air pocket.You might have a bleeder screw on the thermostat housing, but if not try this. with the car cold remove the upper radiator hose, and tie it up with a string about 4" above the motor and start the car, allow it to idle and warm up. while its idling add coolant until you get some out the upper radiator hose. you should have heat while idling.

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