This could be an airleak after the airflow meter, any let breathe dragged in here isn t seen by the ECU and consequently not compensated for and can thin the engine out and can also allow the engine to rev in the works in the same way as not desired causing gruff running. As its a mechanical anomaly it tends not to point of view upon the aberration blithe and you can sometimes listen a hissing noise afterward the engine running.
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 practically the suffering history. It currently has a master tech approved idle freshen rule valve and tps installed. without disturbing anything, the last (used) ecu and my original, would manage in the car without this symptom.
I'm reviewing your question now, and will herald incite considering your answer ASAP. Rgds Greg. What fault codes reach you have. Does the engine direct like the MAF disconnected. subsequent to the loud hissing hermetic this could be your problem. This could be a large vacuum leak ,with the MAF combined it is on your own measuring the freshen that is getting taking into consideration the MAF, in view of that if the intake manifold is sucking in expose the let breathe to fuel ratio will be certainly out and cause the engine to stal
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