Overheating

Asked by Jennifer May 20, 2018 at 11:56 AM about the 2007 Pontiac Grand Prix GXP

Question type: Maintenance & Repair

After replacing both hoses and thermostat, flushing
radiator and the car is still running hot suddenly upon start-
up and doesn't have to cool down much TBH what would
be next course of action? She seems to be running hotter
And hotter......Also replaced water pump.....I'm running
outta ideas..... Jennifer......:-)

1 Answer
64,700

firebird338 answered 6 years ago

How are you bleeding the air from the system ? This is the best way remove cap from over flow tank fill with antifreeze to full mark leave cap off and start vehicle and let idle once vehicle starts to reach operating temp antifreeze level in tank will drop add more antifreeze to full mark then put cap back on. PS before level drops it will start to full up in over flow tank this is normal. If it continues to fill up and come out the top of tank you have a blown head gasket.

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