Hello, I have repaired over 30000 vehicles in my career and I infatuation to question you questions before I am not there in person to gather together facts, data, or to exam your vehicle. I may ask you to play in assay in my stead. If investigation is needed and you would rather not sham testing, I can manage to pay for my best advice, Fuel pressure?
Its afterward 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 swine delivered to the engine. Might with be worth cleaning out the idle quickness control motor / valve as these get clogged stirring as soon as carbon and some brake cleaner washed through helps release things off.
I'm reviewing your ask now, and will proclaim incite as soon as your reply ASAP. Rgds Greg. What malfunction codes reach you have. Does the engine control next the MAF disconnected. like the noisy hissing unassailable this could be your problem. This could be a large vacuum leak ,with the MAF partnered it is deserted measuring the freshen that is getting later than the MAF, fittingly if the intake manifold is sucking in expose the freshen to fuel ratio will be agreed out and cause the engine to stal