Hello, I have repaired more than 30000 vehicles in my career and I infatuation to question you questions past I am not there in person to assemble facts, data, or to exam your vehicle. I may question you to function chemical analysis in my stead. If psychotherapy is needed and you would rather not play-act testing, I can come up with the money for my best advice, Fuel pressure?
Might then be worth checking the wiring and connector to the airflow meter for any signs of corrosion or damage. you can complete a fast malformation find if you unplug the meter and govern the engine without it. if the engine condition is the similar after that chances are the meter or the relationship to it is faulty. Its as well as worth cleaning the MAF sensor wires, as they can acquire coated as soon as dirt exceeding times which after that offsets the reading. Use some entrance cleaner or brake cleaner to vaporizer onto the wires to sever the dirt on no account be adjacent to the wires in the manner of whatever as they are utterly fragile
This could be a large vacuum leak ,with the MAF partnered it is abandoned measuring the ventilate that is getting taking into consideration the MAF, in view of that if the intake manifold is sucking in ventilate the air to fuel ratio will be categorically out and cause the engine to stall. If MAF is disconnected the engine goes into a limp measurement and lets the engine run. taking into consideration carb cleaner spray can spray in the place of the hissing behind the engine meting out and bearing in mind you hear the engine stall or rev unconventional there is the leak ,could be a bad vacuum hose bad gasket upon the manifold.