This could be an airleak after the airflow meter, any freshen dragged in here isn t seen by the ECU and fittingly not compensated for and can thin the engine out and can also permit the engine to rev stirring subsequent to not desired causing rude running. As its a mechanical malfunction it tends not to position on the fault lively and you can sometimes listen a hissing noise once 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 approximately the suffering history. It currently has a master tech certified idle expose govern valve and tps installed. without moving anything, the last (used) ecu and my original, would manage in the car without this symptom.
Hello the TPS does have an effect upon switching the car into idle mode suitably I'd recommend to make sure the throttle plate is 100% closed and not slightly ashore like carbon. and after that familiarize the TPS so that the IDL fasten is continuous to the E2 stick like the throttle is closed, and retrieve circuit in the manner of the throttle is just cracked. Don't worry just about any voltages, the IDL admission is the in point of fact important one.