This could be an airleak after the airflow meter, any freshen dragged in here isn t seen by the ECU and correspondingly not compensated for and can thin the engine out and can plus permit the engine to rev happening afterward not desired causing scratchy running. As its a mechanical deformity it tends not to face upon the deformity lively and you can sometimes hear a hissing noise in the manner of the engine running.
I did re-check them tho. The master tech did extensive tests upon the let breathe flow meter and said it was good. similar to I unplug it and run the motor, the car runs sharp and at 850ish. I can forlorn 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 control in the swing of rpm though? I think it without help adjusts it all but 1k..
This could be a large vacuum leak ,with the MAF linked it is and no-one else measuring the ventilate that is getting taking into account the MAF, for that reason if the intake manifold is sucking in freshen the air 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. subsequent to carb cleaner spray vaporizer in the place of the hissing subsequent to the engine government and taking into account you hear the engine stall or rev cutting edge there is the leak ,could be a bad vacuum hose bad gasket on the manifold.