Question about 2001 Pontiac Grand Am SE
2001 Grand Am runs hot anti-freeze comes out of over flow there are no leaks.Could it be the sensor and where is it located.I'm a female and would like to fix problem myself.Thanks
What you need to do on this 8 year old vehicle is simply service the cooling system and see where you stand after that. Turn on the A/C and see if the fan runs. It will run continuously with the A/C on. This will tell you if the fan is good or not. When the engine overheats is the fan running. If so, you know the thermal sensor is good. If not it needs replacing. Do you see coolant flowing in the radiator with the cap off engine cool. You will see the flow when the thermostat opens. Purchase a new thermostat, 1 gallon of DexCool antifreeze, & 1 gallon of distilled water. Set the heater control to full hot. Clean the exterior front cooling fins of the radiator of all debris. Drain the radiator and remove and replace the thermostat, being careful to install it correctly. Install exactly like the old one. Now flush the system with plenty of water. Drain and clean the overflow reservoir. Shut the drain valve and pour in a 50/50 mix of DexCool and distilled water until the radiator is full. Keep adding coolant slowly until all air escapes and you can add no more. Start the engine with the radiator cap off and add coolant as the level goes down. Run the engine until you see no more air bubbles escaping. Put the cap on and bleed air from the system with the bleeder valves if equipped. If no bleeder valves, all the air should have escaped, but I recommend you drive the car and repeat the bleeding process one more time. Careful only remove the cap when the engine is cold. If this does not solve your problem you may have a defective water pump.
Posted on Sep 05, 2009
If the anti-freeze is coming out of the overflow you probably have serious problems. One it could be a blown head gasket or blown intake manifold gasket. I not sure what your abilities are as far as mechanical but there is a lot you have to do and have the tools to do it with. That would explain why you are running hot if you had either of these two problems.
Posted on Sep 05, 2009
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Posted on Jan 02, 2017
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