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Non responsive cold weather pontiac. 4 banger trouble.?

i have a 1998 Pontiac Grand Am that will run great in warm weather with the A.C. on,HOWEVER,during cold weather below 32 degrrees with the defrost or heater on,I will always overheat and lose coolant. I have had the thermostat changed and all hoses checked and passed, C ould this be a blown head gasket as my car has no problems at 40-110 degrees F.? I can start the car one time during very cold weather but,unless I drive it awhile to recharge,I will have to jump it.

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  • 1 decade ago
    Favorite Answer

    could be the cold weather is causing the engine to labor and over heat. have the engine oil drained and flushed. Also pay close attention to the transmissions shifting. Is the engine spending more time in the higher rpms ?

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