This could be an airleak after the airflow meter, any air dragged in here isn t seen by the ECU and so not compensated for and can thin the engine out and can furthermore permit the engine to rev up once not desired causing scratchy running. As its a mechanical malfunction it tends not to perspective on the oddity fresh and you can sometimes hear a hissing noise gone the engine running.
I did re-check them tho. The master tech did extensive tests upon the expose flow meter and said it was good. as soon as I unplug it and control the motor, the car runs uncompromising and at 850ish. I can solitary guess that my additional 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 run in the alternating of rpm though? I think it forlorn adjusts it just about 1k..
This could be a large vacuum leak ,with the MAF amalgamated it is unaided measuring the expose that is getting with the MAF, thus if the intake manifold is sucking in let breathe the ventilate to fuel ratio will be totally out and cause the engine to stall. If MAF is disconnected the engine goes into a limp measurement and lets the engine run. past carb cleaner spray can vaporizer in the area of the hissing subsequent to the engine giving out and past you listen the engine stall or rev superior there is the leak ,could be a bad vacuum hose bad gasket upon the manifold.