This could be an airleak after the airflow meter, any freshen dragged in here isn t seen by the ECU and in view of that not compensated for and can lean the engine out and can after that allow the engine to rev going on similar to not desired causing rasping running. As its a mechanical malformation it tends not to approach on the irregularity light and you can sometimes hear a hissing noise subsequently 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 approximately the pain history. It currently has a master tech endorsed idle ventilate control valve and tps installed. without heartwarming anything, the last (used) ecu and my original, would run in the car without this symptom.
I don't have any check engine lights unless I unplug the MAF sensor. following the MAF is plugged in after that the car will stall unless I put my foot upon the accelerator. There is as a consequence an intermittent popping hermetic coming at idle.