This could be an airleak after the airflow meter, any freshen dragged in here isn t seen by the ECU and so not compensated for and can lean the engine out and can plus allow the engine to rev up with not desired causing sharp running. As its a mechanical malformation it tends not to point upon the fault roomy and you can sometimes hear a hissing noise considering the engine running.
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 more or less the hardship history. It currently has a master tech qualified idle expose direct valve and tps installed. without touching anything, the last (used) ecu and my original, would control in the car without this symptom.
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