This could be an airleak after the airflow meter, any expose dragged in here isn t seen by the ECU and suitably not compensated for and can thin the engine out and can moreover permit the engine to rev happening next not desired causing rude running. As its a mechanical irregularity it tends not to perspective upon the defect lighthearted and you can sometimes listen a hissing noise in the same way 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 very nearly the suffering history. It currently has a master tech approved idle ventilate run valve and tps installed. without upsetting anything, the last (used) ecu and my original, would govern in the car without this symptom.
Hello the TPS does have an effect upon switching the car into idle mode for that reason I'd recommend to create clear the throttle plate is 100% closed and not slightly beached taking into consideration carbon. and next get used to the TPS thus that the IDL fasten is continuous to the E2 attach subsequently the throttle is closed, and entrance circuit bearing in mind the throttle is just cracked. Don't badly affect virtually any voltages, the IDL entre is the in fact important one.