Hello, I have repaired beyond 30000 vehicles in my career and I infatuation to ask you questions in the past I am not there in person to stockpile facts, data, or to test your vehicle. I may ask you to con psychiatry in my stead. If breakdown is needed and you would rather not undertaking testing, I can meet the expense of my best advice, Fuel pressure?
Its in addition to worth getting the fuel pressure checked as if this is low due to a blocked filter or faulty regulator or even a under the weather pump will every consequences in insufficient fuel swine delivered to the engine. Might next be worth cleaning out the idle rapidity direct motor / valve as these get clogged taking place bearing in mind carbon and some brake cleaner washed through helps free things off.
I'm reviewing your ask now, and will proclaim support with your answer ASAP. Rgds Greg. What deviation codes complete you have. Does the engine control later than the MAF disconnected. considering the loud hissing hermetic this could be your problem. This could be a large vacuum leak ,with the MAF related it is forlorn measuring the air that is getting next the MAF, thus if the intake manifold is sucking in ventilate the ventilate to fuel ratio will be totally out and cause the engine to stal