Question about 1997 Oldsmobile 88

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Hello! This might be complicated....

Hey all. The motor works fine when it's first started. After driven throughout the city, the motor begins to heat up (NOT the radiator) and it begins to bog out...and if not moving, it will stall...then it takes roughly 1/2 an hr.to actually start it again. The upper and lower intake manifolds were just replaced, as well as the enitire exhaust system...including the catalytic convertor. I was told that replacing the intake manifods would solve my dilemma, but it runs the same as always. I'm thinking it's a sensor problem...but I also had a mechanic take a look at and clean my mass airflow sensor...I'm at wits end. I have no idea where to look next. Can anyone help??

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I don't know why they would start out by looking at the intake manifillds! I would start by looking at the radiator thermostat. Cheap and usually easy to get at. If it has an electric fan, is it running when the motor is hot? Do the blades rotate easily or are the bearings shot? If it has a thermostatic fan the blades should turn freely when cold and when hot the blades should be spinning as the motor spins the pully on the water pump. Hope this gives you some easy things to look at before you get involved with other sensors. Good Luck.

Posted on Sep 26, 2008

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