Hello, I have repaired higher than 30000 vehicles in my career and I need to ask you questions past I am not there in person to stockpile facts, data, or to exam your vehicle. I may question you to produce a result examination in my stead. If examination is needed and you would rather not doing testing, I can have the funds for my best advice, Fuel pressure?
Its also worth getting the fuel pressure checked as if this is low due to a blocked filter or faulty regulator or even a in poor health pump will all upshot in insufficient fuel visceral delivered to the engine. Might also be worth cleaning out the idle eagerness direct motor / valve as these get clogged taking place taking into account carbon and some brake cleaner washed through helps clear things off.
This could be a large vacuum leak ,with the MAF amalgamated it is unaided measuring the expose that is getting similar to the MAF, as a result if the intake manifold is sucking in air the air to fuel ratio will be unquestionably out and cause the engine to stall. If MAF is disconnected the engine goes into a limp measurement and lets the engine run. bearing in mind carb cleaner spray can spray in the place of the hissing taking into account the engine management and taking into consideration you listen the engine stall or rev highly developed there is the leak ,could be a bad vacuum hose bad gasket upon the manifold.