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 as a consequence permit the engine to rev occurring with not desired causing argumentative running. As its a mechanical aberration it tends not to twist upon the malformation lively and you can sometimes listen a hissing noise similar to the engine running.
Its as well as worth getting the fuel pressure checked as if this is low due to a blocked filter or faulty regulator or even a poorly pump will every outcome in insufficient fuel swine delivered to the engine. Might as well as be worth cleaning out the idle readiness direct motor / valve as these acquire clogged happening in imitation of carbon and some brake cleaner washed through helps forgive things off.
I don't have any check engine lights unless I unplug the MAF sensor. with the MAF is plugged in later the car will stall unless I put my foot on the accelerator. There is then an intermittent popping strong coming at idle.