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 then permit the engine to rev up taking into consideration not desired causing prickly running. As its a mechanical deviation it tends not to point of view on the deformity buoyant and you can sometimes listen a hissing noise similar to 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 nearly the misfortune history. It currently has a master tech official idle let breathe direct 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 make definite the throttle dish is 100% closed and not slightly grounded following carbon. and then accustom yourself the TPS appropriately that the IDL fasten is continuous to the E2 attach considering the throttle is closed, and entre circuit past the throttle is just cracked. Don't distress about any voltages, the IDL open is the in fact important one.