This could be an airleak after the airflow meter, any air dragged in here isn t seen by the ECU and consequently not compensated for and can thin the engine out and can afterward allow the engine to rev happening once not desired causing rasping running. As its a mechanical aberration it tends not to twist upon the idiosyncrasy light and you can sometimes listen a hissing noise as soon as 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 little more nearly the hardship history. It currently has a master tech qualified idle expose control valve and tps installed. without touching anything, the last (used) ecu and my original, would control in the car without this symptom.
Hello the TPS does have an effect upon switching the car into idle mode hence I'd suggest to make certain the throttle plate is 100% closed and not slightly stuck once carbon. and next become accustomed the TPS therefore that the IDL fasten is continuous to the E2 stick bearing in mind the throttle is closed, and retrieve circuit following the throttle is just cracked. Don't bother approximately any voltages, the IDL admission is the truly important one.