This could be an airleak after the airflow meter, any expose dragged in here isn t seen by the ECU and fittingly not compensated for and can lean the engine out and can with allow the engine to rev stirring gone not desired causing rasping running. As its a mechanical oddity it tends not to twist upon the defect lighthearted and you can sometimes hear a hissing noise gone 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 not quite the problem history. It currently has a master tech ascribed idle air manage valve and tps installed. without touching anything, the last (used) ecu and my original, would rule in the car without this symptom.
I don't have any check engine lights unless I unplug the MAF sensor. next the MAF is plugged in after that the car will stall unless I put my foot on the accelerator. There is after that an intermittent popping unassailable coming at idle.