Hello, I have repaired over 30000 vehicles in my career and I habit to question you questions before I am not there in person to gather together facts, data, or to test your vehicle. I may question you to do something investigation in my stead. If psychoanalysis is needed and you would rather not law testing, I can have enough money my best advice, Fuel pressure?
I did re-check them tho. The master tech did extensive tests on the freshen flow meter and said it was good. in imitation of I unplug it and govern the motor, the car runs sharp and at 850ish. I can solitary guess that my extra rebuilt ecu has an issue, or the tps needs to be re-adjusted, or somehow my maf has died in the midst of every this. I don't think the tps has that much govern in the rotate of rpm though? I think it only adjusts it roughly speaking 1k..
This could be a large vacuum leak ,with the MAF similar it is solitary measuring the let breathe that is getting with the MAF, thus if the intake manifold is sucking in let breathe the freshen to fuel ratio will be enormously out and cause the engine to stall. If MAF is disconnected the engine goes into a limp measurement and lets the engine run. next carb cleaner vaporizer spray can in the area of the hissing once the engine processing and in the same way as you listen the engine stall or rev well along there is the leak ,could be a bad vacuum hose bad gasket on the manifold.