Hello, I have repaired greater than 30000 vehicles in my career and I craving to question you questions in the past I am not there in person to accrue facts, data, or to test your vehicle. I may ask you to play-act examination in my stead. If psychiatry is needed and you would rather not appear in testing, I can provide my best advice, Fuel pressure?
Its moreover 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 consequences in insufficient fuel instinctive delivered to the engine. Might along with be worth cleaning out the idle promptness manage motor / valve as these get clogged up as soon as carbon and some brake cleaner washed through helps pardon things off.
This could be a large vacuum leak ,with the MAF partnered it is without help measuring the air that is getting behind the MAF, hence if the intake manifold is sucking in freshen the expose 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. later carb cleaner spray vaporizer in the place of the hissing following the engine executive and afterward you hear the engine stall or rev difficult there is the leak ,could be a bad vacuum hose bad gasket on the manifold.