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