This could be an airleak after the airflow meter, any expose dragged in here isn t seen by the ECU and consequently not compensated for and can lean the engine out and can then allow the engine to rev in the works like not desired causing rasping running. As its a mechanical deviation it tends not to twist on the deviation vivacious and you can sometimes hear a hissing noise as soon as the engine running.
Its in addition to worth getting the fuel pressure checked as if this is low due to a blocked filter or faulty regulator or even a under the weather pump will all upshot in insufficient fuel living thing delivered to the engine. Might also be worth cleaning out the idle promptness direct motor / valve as these get clogged in the works as soon as carbon and some brake cleaner washed through helps pardon things off.
I'm reviewing your ask now, and will make known back bearing in mind your respond ASAP. Rgds Greg. What deformity codes get you have. Does the engine govern next the MAF disconnected. afterward the noisy hissing hermetically sealed this could be your problem. This could be a large vacuum leak ,with the MAF amalgamated it is single-handedly measuring the expose that is getting next the MAF, thus if the intake manifold is sucking in expose the freshen to fuel ratio will be categorically out and cause the engine to stal