Question about 2000 Pontiac Grand Am GT
Okay, if it turns on with coolant temp sensor unplugged, then this tells me that the fan is good and also relay is good, you replace thermostant, and the sensor, you covered all those bases,now we go into coolant flowing,this tells me the coolant is not flowing inside the motor,two thing can cause this, one being the waterpump, the impeller may have broken or rusted, and the next would be exhaust entering the cooling system restricting the flow and making it overheat,this is gasket from a headgasket problem. the next thing i would do is to have a block test done to see if exhaust is entering the cooling system, good luck.
Posted on Apr 30, 2010
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Posted on Jan 02, 2017
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