Question about 2003 Jeep Grand Cherokee

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Temprature gauge went all the way over to hottestest.I shut vehicle off. I started and was still reading hot. I did this twice then it read normal. Would this be a thermostate. Oh and it has antifreeze in it.

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Sounds like a lazy thermostat or a temp sender that is failing. Replace the stat and see if it helps. Thermostats are inexpensive so don't even bother testing it. Make sure when re-filling, you put the heater on high heat so it does not get air bound.

Posted on Aug 02, 2010

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