This could be an airleak after the airflow meter, any air dragged in here isn t seen by the ECU and hence not compensated for and can lean the engine out and can moreover permit the engine to rev taking place in imitation of not desired causing coarse running. As its a mechanical deformity it tends not to slant on the idiosyncrasy lively 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 very nearly the burden history. It currently has a master tech official idle let breathe manage 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 on switching the car into idle mode therefore I'd suggest to create clear the throttle dish is 100% closed and not slightly high and dry considering carbon. and later become accustomed the TPS so that the IDL attach is continuous to the E2 fix once the throttle is closed, and admittance circuit once the throttle is just cracked. Don't trouble just about any voltages, the IDL way in is the in point of fact important one.