Question about 1999 Pontiac Grand Am GT

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My 1999 Grand Am GT has muliple problems but rite now I'm focused on it over heating. It has a new water pump, new coolant tank, and new thermestat. My car has water flow but is still overheating. Im afraid I may have blown a head gasket, my car has also lost power because of this. What do you think may be wrong, and how do I fix it?

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  • Pontiac Master
  • 8,743 Answers

To check for blown gasket, open radiator cap, start engine, allow to warm up--thermostat open. If combustion gases are leaking into coolant, you will see bubbles come up in the radiator or reservoir (if you don't have a radiator cap).

If not this,

Please see my tip at http://www.fixya.com/cars/r5929960-s_thermostat . These are generic instructions. If you get stuck or need specific instructions for your car, please get back to me with model, year and engine info.

Posted on Oct 04, 2010

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1 Answer

My 99 grand am is over heating i changed the water pump thromstat antifreeze keeps coming out the overflo tank


I had the same problem with my grand am replace the coolant reservoir tank that should fix your issue

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