This could be an airleak after the airflow meter, any air dragged in here isn t seen by the ECU and in view of that not compensated for and can lean the engine out and can also permit the engine to rev stirring later than not desired causing rasping running. As its a mechanical idiosyncrasy it tends not to outlook upon the anomaly spacious and you can sometimes listen a hissing noise like the engine running.
Might with be worth checking the wiring and connector to the airflow meter for any signs of corrosion or damage. you can get a quick deviation locate if you unplug the meter and manage the engine without it. if the engine condition is the similar subsequently chances are the meter or the link to it is faulty. Its furthermore worth cleaning the MAF sensor wires, as they can acquire coated in the manner of dirt higher than period which later offsets the reading. Use some way in cleaner or brake cleaner to spray onto the wires to remove the dirt on no account adjoin the wires as soon as whatever as they are definitely fragile
This could be a large vacuum leak ,with the MAF aligned it is lonely measuring the ventilate that is getting later the MAF, therefore if the intake manifold is sucking in expose the expose to fuel ratio will be unquestionably out and cause the engine to stall. If MAF is disconnected the engine goes into a limp measurement and lets the engine run. once carb cleaner spray spray in the place of the hissing subsequent to the engine meting out and once you listen the engine stall or rev complex there is the leak ,could be a bad vacuum hose bad gasket upon the manifold.