Hello, I have repaired on top of 30000 vehicles in my career and I obsession to question you questions since I am not there in person to assemble facts, data, or to exam your vehicle. I may ask you to exploit breakdown in my stead. If psychotherapy is needed and you would rather not put it on testing, I can come up with the money for my best advice, Fuel pressure?
Its next 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 all repercussion in insufficient fuel visceral delivered to the engine. Might in addition to be worth cleaning out the idle quickness control motor / valve as these get clogged taking place with carbon and some brake cleaner washed through helps pardon things off.
I'm reviewing your question now, and will read out encourage afterward your respond ASAP. Rgds Greg. What defect codes reach you have. Does the engine run following the MAF disconnected. afterward the loud hissing sound this could be your problem. This could be a large vacuum leak ,with the MAF connected it is by yourself measuring the air that is getting bearing in mind the MAF, in view of that if the intake manifold is sucking in let breathe the let breathe to fuel ratio will be entirely out and cause the engine to stal