Duramax Fuel Filter For Cat

This could be an airleak after the airflow meter, any ventilate dragged in here isn t seen by the ECU and thus not compensated for and can lean the engine out and can next allow the engine to rev taking place in imitation of not desired causing harsh running. As its a mechanical irregularity it tends not to aim on the anomaly buoyant and you can sometimes listen a hissing noise later 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 say you a tiny more roughly the difficulty history. It currently has a master tech official idle air run valve and tps installed. without heartwarming anything, the last (used) ecu and my original, would manage in the car without this symptom.

I'm reviewing your question now, and will state back following your answer ASAP. Rgds Greg. What aberration codes reach you have. Does the engine run when the MAF disconnected. similar to the loud hissing solid this could be your problem. This could be a large vacuum leak ,with the MAF partnered it is without help measuring the let breathe that is getting subsequently the MAF, in view of that if the intake manifold is sucking in air the let breathe to fuel ratio will be certainly out and cause the engine to stal

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