Question about Cadillac DeVille

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2000 Cadillac DeVille has been indicating my temperature is exceeding normal levels although not leaking any fluids, no white smoke, no change in fluid levels and not exceedingly hot to the touch. Daily commute less than 15 miles. Today temp went above normal range after aprox 10 miles of driving and the car computer said to Stop Engine. The temp gague came back into the normal range after about 15 minutes with the engine off. Drove another 4ish miles home and temp again went slightly above normal. Have replaced radiortor cap and thermostat. What else?? Experts I know you can tell me.

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  • meshad711 May 07, 2010

    Thank you very much!! I will give your suggestions a whirl and see how it goes. I apprecite your multi-step options though. Sincerely!
    ~ Mesha

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Have you changed your coolant out, it may be time. Second, trapped air bubbles can also cause an overheat. Third head gaskets can cause an overheat. I would first off get your coolant flushed and flushed well, if the problem is not solved by this have your headgaskets checked. If this does not solve your problem and you are positive that everything is working properly and all fluid levels are good then i would have your coolant temp sensor replaced. I hope this can point you in the correct direction. Remember if your water has evaporated out of your coolant and it is no longer 50/50 mix then you have a good chance of overheat

Posted on May 07, 2010

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