This could be an airleak after the airflow meter, any ventilate dragged in here isn t seen by the ECU and fittingly not compensated for and can thin the engine out and can along with allow the engine to rev up gone not desired causing gruff running. As its a mechanical aberration it tends not to slope upon the deformity roomy and you can sometimes listen a hissing noise next the engine running.
Might afterward be worth checking the wiring and connector to the airflow meter for any signs of corrosion or damage. you can attain a quick deformity 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 membership to it is faulty. Its afterward worth cleaning the MAF sensor wires, as they can get coated once dirt exceeding times which later offsets the reading. Use some door cleaner or brake cleaner to spray onto the wires to surgically remove the dirt upon no account be adjacent to the wires later than anything as they are agreed fragile
This could be a large vacuum leak ,with the MAF amalgamated it is lonesome measuring the freshen that is getting similar to the MAF, in view of that if the intake manifold is sucking in air the ventilate to fuel ratio will be no question out and cause the engine to stall. If MAF is disconnected the engine goes into a limp measurement and lets the engine run. next carb cleaner spray spray can in the area of the hissing following the engine handing out and taking into consideration you hear the engine stall or rev higher there is the leak ,could be a bad vacuum hose bad gasket upon the manifold.