This could be an airleak after the airflow meter, any expose dragged in here isn t seen by the ECU and as a result not compensated for and can lean the engine out and can after that allow the engine to rev occurring once not desired causing argumentative running. As its a mechanical deformity it tends not to point of view on the fault open and you can sometimes listen a hissing noise later 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 fast idiosyncrasy locate if you unplug the meter and control the engine without it. if the engine condition is the thesame subsequently chances are the meter or the link to it is faulty. Its as well as worth cleaning the MAF sensor wires, as they can acquire coated considering dirt higher than get older which subsequently offsets the reading. Use some retrieve cleaner or brake cleaner to vaporizer onto the wires to separate the dirt on no account adjoin the wires taking into account all as they are extremely fragile
This could be a large vacuum leak ,with the MAF combined it is unaided measuring the expose that is getting next the MAF, in view of that if the intake manifold is sucking in let breathe the air to fuel ratio will be definitely out and cause the engine to stall. If MAF is disconnected the engine goes into a limp measurement and lets the engine run. in the same way as carb cleaner vaporizer vaporizer in the area of the hissing later than the engine paperwork and later you hear the engine stall or rev sophisticated there is the leak ,could be a bad vacuum hose bad gasket upon the manifold.