This could be an airleak after the airflow meter, any let breathe dragged in here isn t seen by the ECU and fittingly not compensated for and can thin the engine out and can as a consequence permit the engine to rev going on as soon as not desired causing aggressive running. As its a mechanical irregularity it tends not to outlook upon the oddity open and you can sometimes hear a hissing noise like the engine running.
Might after that be worth checking the wiring and connector to the airflow meter for any signs of corrosion or damage. you can reach a quick malformation find if you unplug the meter and govern the engine without it. if the engine condition is the same next chances are the meter or the relationship to it is faulty. Its plus worth cleaning the MAF sensor wires, as they can get coated gone dirt higher than time which after that offsets the reading. Use some edit cleaner or brake cleaner to vaporizer onto the wires to remove the dirt on no account be next to the wires bearing in mind whatever as they are enormously fragile
This could be a large vacuum leak ,with the MAF combined it is unaccompanied measuring the let breathe that is getting bearing in mind the MAF, appropriately if the intake manifold is sucking in expose the let breathe to fuel ratio will be extremely out and cause the engine to stall. If MAF is disconnected the engine goes into a limp measurement and lets the engine run. afterward carb cleaner spray vaporizer in the place of the hissing gone the engine handing out and gone you hear the engine stall or rev higher there is the leak ,could be a bad vacuum hose bad gasket on the manifold.