Question about 2001 Pontiac Sunfire

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Can't get coolant flow after changing the thermostat

2001 sunfire when i changed the thermostat the coolant won't flow thru the system even when i try to air bleed it ' but if i take out the thermostat the coolant flows fine.how do i get the coolant to flow thru the system?the car is heating up really hot and it still won't open the thermostat

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  • dangle644 Jan 20, 2009

    i tried boiling the thermostat and it did open.

    thx

  • dangle644 Jan 21, 2009

    i put a new water pump on and still nothing

  • dangle644 Jan 21, 2009

    it still won't work even with a new water pump

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Check the thermostat in boiling water if its opens then its good or if it does not open then thermostat is defective replace it ....


Good luck...

Posted on Jan 20, 2009

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You will need to Change the Water Pump. It is still pumping, Just not enough to get the Thermostat to Open.

Posted on Jan 20, 2009

  • Travis Humphries
    Travis Humphries Jan 21, 2009

    You probably have a Bad Gasket on the Head then.

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