Question about 2001 Chevrolet Cavalier

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1992 ford f150 / 300 -6

When cold ,engine shakes and appears to only be running on 3 cylinders . When it warms up it runs perfectly, then occasionly will begin to sputter . Changed the plugs , wires , cap, rotor and fuel filter. exchanged the coil and most of the sensors will used ones and still have the same problem. Any help would be appreciated.

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Click on this link & scroll down the page at right side & see picture, & read where located & have a look at the coolant temperature sensor, so you know what your looking for. It can be the cause of what your describing. Personally used sensors, unless I just took them out of a good running vehicle recently, I'm leery of, and this one is about $20, so I'd go new. If that didn't cure it, I'd go with "Intake air temperature sensor". A quick scan should confirm it for you, before, but .....

http://www.autozone.com/shopping/repairGuide.htm?pageId=0900c152801cd61e

Posted on Jan 04, 2009

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I don't like gue$$ing!! sounds like a valve have you did a compression test on it cold!!! then hot good place to start and stop gue$$ing

Posted on Jan 04, 2009

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