This could be an airleak after the airflow meter, any ventilate dragged in here isn t seen by the ECU and therefore not compensated for and can thin the engine out and can after that allow the engine to rev taking place similar to not desired causing unfriendly running. As its a mechanical irregularity it tends not to position upon the aberration open and you can sometimes listen a hissing noise as soon as 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 reach a fast malformation locate if you unplug the meter and rule the engine without it. if the engine condition is the same subsequently chances are the meter or the attachment to it is faulty. Its as a consequence worth cleaning the MAF sensor wires, as they can get coated subsequent to dirt higher than become old which subsequently offsets the reading. Use some contact cleaner or brake cleaner to spray onto the wires to separate the dirt on no account be next to the wires in imitation of everything as they are categorically fragile
I'm reviewing your question now, and will say encourage subsequent to your answer ASAP. Rgds Greg. What malfunction codes accomplish you have. Does the engine direct later the MAF disconnected. subsequently the loud hissing sound this could be your problem. This could be a large vacuum leak ,with the MAF united it is forlorn measuring the ventilate that is getting past the MAF, in view of that if the intake manifold is sucking in air the ventilate to fuel ratio will be agreed out and cause the engine to stal