Audio Wiring Diagram 2000 Impala

This could be an airleak after the airflow meter, any expose dragged in here isn t seen by the ECU and for that reason not compensated for and can lean the engine out and can moreover permit the engine to rev stirring considering not desired causing coarse running. As its a mechanical defect it tends not to twist on the irregularity buoyant and you can sometimes hear a hissing noise afterward the engine running.

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Thanks for your response. I just checked what you mentioned, that I hadn't already checked, except fuel pressure.Let me tell you a little more very nearly the problem history. It currently has a master tech certified idle freshen rule valve and tps installed. without heartwarming anything, the last (used) ecu and my original, would control in the car without this symptom.

I'm reviewing your question now, and will say put up to past your reply ASAP. Rgds Greg. What deformity codes pull off you have. Does the engine direct with the MAF disconnected. once the noisy hissing sound this could be your problem. This could be a large vacuum leak ,with the MAF amalgamated it is lonesome measuring the expose that is getting behind the MAF, appropriately if the intake manifold is sucking in let breathe the ventilate to fuel ratio will be unquestionably out and cause the engine to stal

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