This could be an airleak after the airflow meter, any expose dragged in here isn t seen by the ECU and thus not compensated for and can thin the engine out and can with allow the engine to rev up taking into account not desired causing rough running. As its a mechanical aberration it tends not to perspective upon the deviation open and you can sometimes listen a hissing noise in the same way as the engine running.
Might as a consequence be worth checking the wiring and connector to the airflow meter for any signs of corrosion or damage. you can get a quick anomaly locate if you unplug the meter and run the engine without it. if the engine condition is the same then chances are the meter or the link to it is faulty. Its next worth cleaning the MAF sensor wires, as they can get coated in the manner of dirt more than era which later offsets the reading. Use some right to use cleaner or brake cleaner to vaporizer onto the wires to separate the dirt on no account lie alongside the wires considering anything as they are completely fragile
I'm reviewing your question now, and will proclaim urge on afterward your answer ASAP. Rgds Greg. What malformation codes attain you have. Does the engine govern subsequently the MAF disconnected. when the noisy hissing strong this could be your problem. This could be a large vacuum leak ,with the MAF associated it is lonesome measuring the air that is getting considering the MAF, fittingly if the intake manifold is sucking in ventilate the expose to fuel ratio will be enormously out and cause the engine to stal