Hello, I have repaired greater than 30000 vehicles in my career and I habit to question you questions previously I am not there in person to gather together facts, data, or to exam your vehicle. I may ask you to feint psychoanalysis in my stead. If breakdown is needed and you would rather not perform testing, I can have enough money my best advice, Fuel pressure?
Thanks for your response. I just checked what you mentioned, that I hadn't already checked, except fuel pressure.Let me say you a tiny more roughly the misery history. It currently has a master tech credited idle freshen direct valve and tps installed. without distressing anything, the last (used) ecu and my original, would govern in the car without this symptom.
This could be a large vacuum leak ,with the MAF united it is deserted measuring the ventilate that is getting once the MAF, so if the intake manifold is sucking in air the freshen to fuel ratio will be very out and cause the engine to stall. If MAF is disconnected the engine goes into a limp measurement and lets the engine run. taking into account carb cleaner vaporizer spray in the area of the hissing like the engine organization and past you listen the engine stall or rev unconventional there is the leak ,could be a bad vacuum hose bad gasket on the manifold.