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Is there an easy way to replace the thermostat on a 95 pontiac grand am 2.3 dohc quad 4 without taking out the motor from the car.

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Hi there.
Yes, You do not have to take the engine out for this operation.

First, make sure that it is the coolant thermostat that is faulty.

When starting the vehicle from cold with a faulty thermostat, the radiator will start to warm almost instantly. The temperature gauge will stay low for a long time, and getting cabin heat within 2 minutes will be impossible.

Thermostats are nearly always located on the engine at the hose outlet to the top of the radiator. As it is at the top front of the engine, access is usually straightforward once any soundcovers etc are removed.

Other related problems are - Electric fan problems (caused by faulty temperature switch) and temperature sensor reradings - caused by faulty sensor, or electrical supply.

Thanks for using Fixya! If this provides a solution, please rate as such. Thanks.

Posted on Jul 02, 2008

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