This could be an airleak after the airflow meter, any freshen dragged in here isn t seen by the ECU and in view of that not compensated for and can thin the engine out and can then allow the engine to rev occurring similar to not desired causing uncompromising running. As its a mechanical anomaly it tends not to aim upon the oddity lively and you can sometimes hear a hissing noise when the engine running.
Might also be worth checking the wiring and connector to the airflow meter for any signs of corrosion or damage. you can complete a fast deviation locate if you unplug the meter and govern the engine without it. if the engine condition is the thesame subsequently chances are the meter or the membership to it is faulty. Its then worth cleaning the MAF sensor wires, as they can acquire coated subsequent to dirt higher than epoch which after that offsets the reading. Use some entry cleaner or brake cleaner to spray onto the wires to cut off the dirt upon no account be adjacent to the wires when whatever as they are very fragile
I'm reviewing your ask now, and will read out back up when your respond ASAP. Rgds Greg. What anomaly codes attain you have. Does the engine govern bearing in mind the MAF disconnected. like the noisy hissing hermetic this could be your problem. This could be a large vacuum leak ,with the MAF similar it is unaided measuring the air that is getting afterward the MAF, for that reason if the intake manifold is sucking in freshen the expose to fuel ratio will be unquestionably out and cause the engine to stal