This could be an airleak after the airflow meter, any freshen dragged in here isn t seen by the ECU and consequently not compensated for and can lean the engine out and can along with allow the engine to rev stirring past not desired causing rasping running. As its a mechanical malformation it tends not to point on the aberration light and you can sometimes listen a hissing noise taking into consideration the engine running.
Might as well as be worth checking the wiring and connector to the airflow meter for any signs of corrosion or damage. you can complete a quick irregularity locate if you unplug the meter and govern the engine without it. if the engine condition is the thesame later chances are the meter or the association to it is faulty. Its also worth cleaning the MAF sensor wires, as they can acquire coated like dirt on top of get older which next offsets the reading. Use some right of entry cleaner or brake cleaner to spray can onto the wires to remove the dirt upon no account touch the wires when everything as they are certainly fragile
I'm reviewing your ask now, and will say put up to next your respond ASAP. Rgds Greg. What anomaly codes do you have. Does the engine manage as soon as the MAF disconnected. subsequently the loud hissing unassailable this could be your problem. This could be a large vacuum leak ,with the MAF united it is deserted measuring the let breathe that is getting in the same way as the MAF, therefore if the intake manifold is sucking in air the freshen to fuel ratio will be totally out and cause the engine to stal