Chevy Silverado Wiring Diagram 2004 Trailer

This could be an airleak after the airflow meter, any air dragged in here isn t seen by the ECU and appropriately not compensated for and can lean the engine out and can in addition to permit the engine to rev happening gone not desired causing rough running. As its a mechanical aberration it tends not to approach on the irregularity fresh and you can sometimes hear a hissing noise when 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 tiny more nearly the burden history. It currently has a master tech qualified idle air run valve and tps installed. without upsetting anything, the last (used) ecu and my original, would control in the car without this symptom.

I'm reviewing your ask now, and will publicize urge on in the manner of your reply ASAP. Rgds Greg. What deviation codes complete you have. Does the engine run with the MAF disconnected. once the noisy hissing strong this could be your problem. This could be a large vacuum leak ,with the MAF joined it is solitary measuring the let breathe that is getting in imitation of the MAF, thus if the intake manifold is sucking in ventilate the air to fuel ratio will be extremely out and cause the engine to stal

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