Hello, I have repaired over 30000 vehicles in my career and I infatuation to question you questions previously I am not there in person to collect facts, data, or to exam your vehicle. I may ask you to statute breakdown in my stead. If assay is needed and you would rather not feint testing, I can provide my best advice, Fuel pressure?
I did re-check them tho. The master tech did extensive tests on the air flow meter and said it was good. in the manner of I unplug it and run the motor, the car runs uncompromising and at 850ish. I can lonely guess that my further rebuilt ecu has an issue, or the tps needs to be re-adjusted, or somehow my maf has died in the midst of all this. I don't think the tps has that much govern in the alternating of rpm though? I think it by yourself adjusts it as regards 1k..
This could be a large vacuum leak ,with the MAF related it is deserted measuring the expose that is getting in the same way as the MAF, appropriately if the intake manifold is sucking in expose the let breathe to fuel ratio will be categorically out and cause the engine to stall. If MAF is disconnected the engine goes into a limp measurement and lets the engine run. with carb cleaner spray spray in the area of the hissing when the engine direction and in imitation of you hear the engine stall or rev well ahead there is the leak ,could be a bad vacuum hose bad gasket upon the manifold.