Question about 2003 Pontiac Sunfire

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My 2003 sun fire

My 2003 sunfire runs hot when at a stand still ans the fan does not come on sometimes until after car is off..their is plenty of water in it and i dont know if its the thermostat or whats wrong with it can u please help me..

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Test thermostat: turn on there plenty of heat blowing?
if not, replace thermostat.
if yes, then replace coolant, but flush cooling system before new coolant goes in.

Posted on Jul 03, 2008

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