2005 buick terraza overheating

Asked by Guru9DXLVC Nov 02, 2020 at 05:29 PM about the 2005 Buick Terraza

Question type: Maintenance & Repair

Have changed water pump and thermostat yet
motor is still getting hot. Not letting coolant
circulate through the motor. Backs up in overflow
have to take off radiator cap to release fluid back
in to radiator. Any ideas?

1 Answer
4,290

lincolnscott49 answered 4 years ago

Did you purge the coolant while filling? If it isn't circulating the thermostat may not be opening or you have a blockage in the cooling system air or otherwise. If the water pump seal failed prior to replacing and the vehicle overheated you may have a blown head gasket. You can do a chemical block test to see if exhaust fumes are getting into the cooling system to rule this out. Any smoke coming from the ehaust pipe or smell of antifreeze?

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