Question about 2004 Jeep Grand Cherokee

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2004 jeep cherokee

My jeep is over heating is it the water pump or radiator or thermastat.

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  • Dennis Yachimec May 11, 2010

    Have you been adding coolant? If not, could be thermostat or fan clutch is not coming on. Also, make sure front of radiator is not plugged. Please let me know what you find out.

  • Anonymous Mar 15, 2014

    Still over heating after i change the thermastat and the water pump

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First off make sure you have fluid in the system. If you do great, then do you have a guage to check water temp.? Is that guage going past the usually range? Or if you turn on the heater are you getting hot air, if not the theromastat is not working. Usually if its the water pump you can see water coming out of the pump.
Hope this helps you some.

Matt

Posted on Apr 24, 2009

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Yes...and no. and you left out the electric fan, and clutch on primary fan. You need to determine the cause by testing. Unless the water pump is leaking or the bearing on the shaft is loose or noisy, it is not causing overheat. Primary cause of overheats is coolant loss. check everything for any and all leaks. Next, change thermostat. It's cheap and easy to replace plus it becomes unreliable after any overheat. Check electric fan to make sure it comes on when needed, and last, check that radiator is not either externally blocked (leaves etc) or internally blocked with calcium deposits. If you have any white smoke from tailpipe , coolant in engine oil or on spark plugs, you have a blown head gasket.
Hopefully it's something simple!

Posted on Apr 24, 2009

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