Hello, I have repaired higher than 30000 vehicles in my career and I infatuation to ask you questions past I am not there in person to gather together facts, data, or to test your vehicle. I may ask you to doing psychiatry in my stead. If chemical analysis is needed and you would rather not pretense testing, I can allow my best advice, Fuel pressure?
Its in addition to worth getting the fuel pressure checked as if this is low due to a blocked filter or faulty regulator or even a below par pump will every upshot in insufficient fuel visceral delivered to the engine. Might furthermore be worth cleaning out the idle swiftness control motor / valve as these acquire clogged stirring next carbon and some brake cleaner washed through helps clear things off.
This could be a large vacuum leak ,with the MAF related it is forlorn measuring the expose that is getting when the MAF, so if the intake manifold is sucking in air the expose to fuel ratio will be no question out and cause the engine to stall. If MAF is disconnected the engine goes into a limp measurement and lets the engine run. past carb cleaner spray vaporizer in the area of the hissing in imitation of the engine handing out and subsequent to you hear the engine stall or rev forward-looking there is the leak ,could be a bad vacuum hose bad gasket on the manifold.