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What is the proper process for replacing the thermostat on a 2001 Pontiac Grand Grix 3.1 V6?


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2006-05-29 23:29:24
2006-05-29 23:29:24

remove all the coolant in the system take out thermostat put new thermostat in fill system...


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P0128 says the engine isn't warming up to proper specs. Start with replacing the thermostat.

All cars need a thermostat for proper operation and longevity.

Yes, the thermostat needs to be installed for proper engine operation.

I Use A small dab of pematex or similar sealant just enough to hold, make sure surface is clean.

Replacing a bad water pump can help to stop a motor from overheating. Hopefully that was the cause of the overheating. If it does not stop the overheating, try replacing the thermostat. Make sure you have the proper mix of antifreeze and water, the radiator filled with it. Check the level of coolant FIRST. Next, the hoses, and third the thermostat. Then, disconnect a hose and see if, by starting the vehicle, if there's water pressure. If not, its water pump time!

A 180 and a 170 degree thermostat are listed for it.

Make sure coolant is at proper level Make sure heater control cable is working Perhaps thermostat needs replacing

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If the thermostat is stuck open, the engine will never warm up to proper temperature.

Replacing a steering column ignition switch on a 2002 Pontiac Grand Prix is not considered a major repair. The task is considered easy but if done wrong could be dangerous. It is best to refer to vehicle manual for the car to ensure proper direction is given.

It is not hard if you have the proper tools. Drain the radiator and remove the upper hose at the engine. Remove the thermostat housing and install the thermostat. Clean the surfaces and install the new thermostat.

If you are talking about the engine temp then more than likely your thermostat is stuck open or if you recently changed it the heat range is not proper causing it to open prematurely and not allow the engine to heat up. Change the thermostat and this should take care of the problem. Hope this helps. "G"

I used a small dab of permatex or similar sealant on flange of t-stat to hold it in place. Make sure surfaces are clean.

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The thermostat is under the housing that the top radiator hose connects to, remove the hose then the housing and change the thermostat. The bolts are metric so be prepared with the proper tools.

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open the radiator cap to release any pressure from the system. Follow the top hose from the radiator and unbolt the two 14 mm bolts holding the thermostat housing in place. Remove the thermostat out of the housing. I replaced mine with a fram 195 degree fail safe (when fails stays open not shut)thermostat. Reinstall making sure you use proper gasket and proper thermostat.

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A stuck open thermostat will not allow the coolant to get up to proper temp, thus poor heat from heater. A stuck closed thermostat will not let coolant circulate and will cause the engine to overheat.

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Yes, you most certainly do. If you have no thermostat installed then the engine will take a very long time to reach full operating temperature and may never get to the proper temperature. The thermostat allows the engine to warm up quickly which helps prevent engine wear, reduce engine deposits, and emissions. The thermostat keeps the engine at the proper operating temperature for the best performance and best mileage. Running a modern computer controlled engine without a thermostat is a very bad idea.

Unbolt the thermostat houseing remove the old thermostat clean all of the old gasket off of the housing and the inlet put on new gasket and new thermostat also recommend flushing the cooling system re torqur the thermostat housing bolts to the proper torque and run the motor check for leaks.

Follow the top radiator hose to where it enters the engine. The thermostat is in that housing. You will need a new gasket. Ask the parts guy how the thermostat is installed. Many thermostat have a "jiggle pin" which most be located correctly.Don't get wrench happy tightening up the thermostat housing fasteners. The proper torque on those fasteners is not much.

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