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 heater...is 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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