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 coolant temp variations

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Posts : 114
Join date : 2014-12-10

PostSubject: coolant temp variations   Sat Feb 27, 2016 9:38 am

I'm guessing the thermostat is the cause of something strange that happens with my car. Occasionally , my temp gauge will climb almost to the red zone , then suddenly drop back to slightly under the half way mark, where it normally stays. It acts like the thermostat opening but happens after I have driven for a few miles and after warm air is coming from the heater. I've never heard of a thermostat closing and reopening while the engine is at normal operating temp. It is not happening often and never goes quite into the red zone , so I guess I can live with it. Question
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Posts : 42
Join date : 2015-10-05
Location : Southeast MI

PostSubject: Re: coolant temp variations   Wed Mar 30, 2016 12:08 pm

Do you have electric fans?
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Posts : 158
Join date : 2012-07-25
Age : 58
Location : Dacula Georgia

PostSubject: Re: coolant temp variations   Wed Mar 30, 2016 9:54 pm

does the air blowing out of the vents get cold? it sounds like your thermostat is sticking. They do open and close to keep the water at the correct temp while the engine is running. I had that happen and I replaced mine, so far so good, knock on wood
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