Posted by Brian Jasper co. Ia on December 11, 2008 at 21:41:53 from (72.171.0.143):
In Reply to: O/T bucking Chevy posted by jay-eye-see on December 11, 2008 at 15:01:42:
Just because they are both 2.2L doesn't mean they're the same engine. Use all of the powertrain management sensors that are original to the car you're using. Don't swap PCM's. Use the injectors original to the car. Do a slow sweep test with a digital ohmmeter on the throttle position sensor looking for a gradual change in resistance. Any large jumps, the sensor is faulty. You're certain you have no vacuum leaks? No holes in the air duct between the throttle body and mass air sensor? No foreign objects covering the mass air sensor? Map sensor has it's vacuum line intact with no frozen moisture in it? Have you checked exhaust back pressure from the pre catalyst sensor hole? Lightly restricted exhaust will cause part throttle misfires that go away under heavy acceleration. 1 psi or more is unacceptable back pressure.
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Today's Featured Article - Listening to Your Tractor - by Curtis Von Fange. Years ago there was a TV show about a talking car. Unless you are from another planet, physically or otherwise, I don’t think our internal combustion buddies will talk and tell us their problems. But, on the other hand, there is a secret language that our mechanical companions readily do speak. It is an interesting form of communication that involves all the senses of the listener. In this series we are going to investigate and learn the basic rudimentary skills of understanding this lingo.
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