Hello, I have repaired higher than 30000 vehicles in my career and I habit to ask you questions back I am not there in person to accrue facts, data, or to exam your vehicle. I may ask you to deed scrutiny in my stead. If investigation is needed and you would rather not do its stuff testing, I can meet the expense of my best advice, Fuel pressure?
Its along with worth getting the fuel pressure checked as if this is low due to a blocked filter or faulty regulator or even a not a hundred percent pump will every outcome in insufficient fuel being delivered to the engine. Might with be worth cleaning out the idle readiness run motor / valve as these get clogged stirring subsequently carbon and some brake cleaner washed through helps free things off.
This could be a large vacuum leak ,with the MAF amalgamated it is unaided measuring the freshen that is getting in imitation of the MAF, consequently if the intake manifold is sucking in expose the ventilate to fuel ratio will be categorically out and cause the engine to stall. If MAF is disconnected the engine goes into a limp measurement and lets the engine run. similar to carb cleaner spray can spray can in the place of the hissing taking into consideration the engine organization and with you listen the engine stall or rev progressive there is the leak ,could be a bad vacuum hose bad gasket upon the manifold.