Question about 2000 Pontiac Bonneville

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I have a 190 degree thermostat on my car, and the temp. gauge always reads 200 degrees....sometimes going over 200 for a few mins (not very often). Is this an issue? Should I replace my thermostat/and or check to make sure my temp. gauge is accurate?

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Not a problem As long as it is not in the red zone. Usually 1/4 - 3/4 of gauge is good. If you use a synthetic oil or 5w30 which is a little thinner keeps engine cooler. Also an exhaust with better flow and more cold air in the intake also help keep it cooler. Make sure antifreeze is 50/50 mixed for best results.

Posted on Nov 13, 2009

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No your fine, 200F is a fine temprature to run at. If you having no overheating issues just leve it. all my cars run at 190-220F.

Posted on Nov 13, 2009

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My car every morning starts to overheat, while


Wrong thermostat. There are varying degrees of operating temperatures for thermostats. Example: 180 Degrees, 190 Degrees. The one you have isn't opening soon enough. If you replace it with a cooler grade thermostat, your problem should go away.

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