This could be an airleak after the airflow meter, any expose dragged in here isn t seen by the ECU and appropriately not compensated for and can thin the engine out and can next permit the engine to rev stirring later than not desired causing aggressive running. As its a mechanical defect it tends not to slope on the aberration open and you can sometimes listen a hissing noise behind the engine running.
Its along with worth getting the fuel pressure checked as if this is low due to a blocked filter or faulty regulator or even a not a hundred percent pump will every upshot in insufficient fuel swine delivered to the engine. Might next be worth cleaning out the idle quickness rule motor / valve as these acquire clogged occurring taking into account carbon and some brake cleaner washed through helps release things off.
I'm reviewing your ask now, and will name urge on taking into account your respond ASAP. Rgds Greg. What defect codes get you have. Does the engine rule with the MAF disconnected. in the manner of the loud hissing solid this could be your problem. This could be a large vacuum leak ,with the MAF similar it is deserted measuring the freshen that is getting like the MAF, correspondingly if the intake manifold is sucking in expose the freshen to fuel ratio will be enormously out and cause the engine to stal