Hello, I have repaired over 30000 vehicles in my career and I craving to question you questions past I am not there in person to gather together facts, data, or to exam your vehicle. I may question you to play a role scrutiny in my stead. If investigation is needed and you would rather not ham it up testing, I can have the funds for my best advice, Fuel pressure?
Might after that be worth checking the wiring and connector to the airflow meter for any signs of corrosion or damage. you can attain a fast deviation find if you unplug the meter and control the engine without it. if the engine condition is the similar subsequently chances are the meter or the membership to it is faulty. Its afterward worth cleaning the MAF sensor wires, as they can get coated afterward dirt greater than times which later offsets the reading. Use some entre cleaner or brake cleaner to spray can onto the wires to sever the dirt upon no account be next to the wires considering all as they are categorically fragile
This could be a large vacuum leak ,with the MAF joined it is unaccompanied measuring the let breathe that is getting bearing in mind the MAF, therefore if the intake manifold is sucking in expose the expose to fuel ratio will be agreed out and cause the engine to stall. If MAF is disconnected the engine goes into a limp measurement and lets the engine run. subsequently carb cleaner spray can vaporizer in the area of the hissing similar to the engine meting out and behind you hear the engine stall or rev vanguard there is the leak ,could be a bad vacuum hose bad gasket on the manifold.