why is my 2005 pontiac grand pix over heat n 15 below weather
I live in South Dakota and my 2005 grand prix is over heating even below
zero weather. The radiator is full of coolant water pump has been changed,
thermostate upper and lower intake gaskets have been changed.
Sounds like may be bad radiator,of coolant fans not working right.
Check the antifreeze concentration. If it's not strong enough for the conditions in North Dakota your antifreeze may be freezing up or even getting slushy. If that's the case you're overheating because of poor coolant circulation. HTH
I'm sorry, South Dakota. Oops! -Jim
Most likely of all is trapped air in the system. With all the work you've done on the cooling system air has likely become trapped in the system when you were refilling it. It must be bled out using the bleeder valve near the thermostat. It can be tricky to get it all out, but until you do your car will continue to overheat.
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