This could be an airleak after the airflow meter, any air dragged in here isn t seen by the ECU and thus not compensated for and can lean the engine out and can as well as allow the engine to rev taking place behind not desired causing argumentative running. As its a mechanical malfunction it tends not to perspective on the aberration lively and you can sometimes listen a hissing noise in the same way as the engine running.
I did re-check them tho. The master tech did extensive tests upon the freshen flow meter and said it was good. subsequent to I unplug it and manage the motor, the car runs aggressive and at 850ish. I can without help guess that my additional rebuilt ecu has an issue, or the tps needs to be re-adjusted, or someway my maf has died in the midst of all this. I don't think the tps has that much govern in the exchange of rpm though? I think it forlorn adjusts it a propos 1k..
have you looked into throttle body coking and/or combustion chamber/valve carbon buildup? are you going on to date upon all maintenance; spark plugs fuel filter pcv vlave etc? have you performed a visual inspection and listened to engine as it warms happening and is warmed up? oftentimes in engine statute many factors may cause the similar symptom(s)