Why is my temp gage going up and down I changed water pump thermostat bleed the cooling system after 50 miles or so I I have to bleed cooling system again then car is fine

Asked by Oct 31, 2016 at 03:09 PM about the 2001 Pontiac Grand Prix SE

Question type: Maintenance & Repair

I've changed everything that has something to do
with the cooling system seems after driving for a
few miles the car gets more air in the system again
then I bleed it again the car is fine for some more
miles

1 Answer

73,875

Look at the radiator water with the cap off and see if there are bubbles. If so you may have a bad head gasket.

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