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What would cause a 1997 Pontiac Sunfire to overheat it has had all sensors replaced no air in the lines the water pump has been replaced no leaks It gets cooler the faster you drive it?
Wiki User
∙ 15y ago
I had the same probs with my 96 sunfire and after doing this the heat gauge dropped towards the middle and stayed: Change out the thermostat. Then... Drain your radiator and shoot water through it to clean it out (you can do this by unhooking your radiator hoses and sticking a hose through one and turning on the water while your engine is running). Then, make sure you get 2 large bottles of antifreeze (remember to get the half water half antifreeze) Then put the antifreeze in your radiator resevour and run your car and keep adding to it as the radiator sucks the antifreeze back in and it stops sucking. Make sure you watch the gauge after all this and if it goes up, check your water level and see if you need to add more antifreeze. Since the thermostat is replaced, your fan should also work! This should def. fix your problem! If not then check things such as the head gasket, water pump, rotting hoses, leaking resevour.
Wiki User
∙ 15y ago
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How do you replace an Airbag for a 1998 Pontiac Sunfire including re-setting the sensors and all?
i would not recommend it
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where are the oxygen sensors on a 2000 Pontiac grand am and how do you change them?
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Why does the cooling fan not rotate on a 1995 Pontiac Sunfire?
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