Hello, I have repaired more than 30000 vehicles in my career and I obsession to question you questions previously I am not there in person to gather together facts, data, or to exam your vehicle. I may ask you to decree psychoanalysis in my stead. If psychiatry is needed and you would rather not law testing, I can have the funds for my best advice, Fuel pressure?
I started the car up this morning, it starts taking place and runs at 1750 and within a minute or therefore climbs exceeding 2500.. It is management mild though, just artifice vanguard than it should be. I as a consequence checked the throttle screw plate/return screw, with intent turned it out and nothing changed. put it urge on to exactly where it was. No vacuum leak sounds and all contacts verified. I character fine about them as I've been in there a bunch of times..
This could be a large vacuum leak ,with the MAF aligned it is solitary measuring the air that is getting in the manner of the MAF, correspondingly if the intake manifold is sucking in ventilate the let breathe to fuel ratio will be extremely 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 spray can in the area of the hissing past the engine giving out and with you listen the engine stall or rev well along there is the leak ,could be a bad vacuum hose bad gasket on the manifold.