Question about 2000 Pontiac Grand Prix

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Dtknog@yahoo.com my service engine light is on i change my thermastat i did a intake gasket change iput a water pump rebuilt one on  and now my car runs hot quick inside the radiator but the engine be cold it seems like the water not runnin thru the engine corectly when i start the car i bleed the water valves igot 2 of them on top of the engine i have a 2000 grand prix se 3100 engine and the engine idle real high

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Are you sure you put the thermostat in the right direction? The 195 degree copper bulb shold be on the bottom side. If it is a stock one.

Posted on Feb 08, 2009

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Here is the procedure for your car:
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Fig. Thermostat and housing-typical

To install:

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  3. Install the thermostat housing bolts and tighten as follows:
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    2. 2000-05 models: 89 inch lbs. (10 Nm).

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