This could be an airleak after the airflow meter, any let breathe dragged in here isn t seen by the ECU and suitably not compensated for and can thin the engine out and can as well as allow the engine to rev stirring behind not desired causing argumentative running. As its a mechanical malformation it tends not to turn on the aberration blithe and you can sometimes listen a hissing noise considering the engine running.
I did re-check them tho. The master tech did extensive tests on the expose flow meter and said it was good. considering I unplug it and control the motor, the car runs scratchy and at 850ish. I can lonesome 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 all this. I don't think the tps has that much manage in the swap of rpm though? I think it deserted adjusts it almost 1k..
have you looked into throttle body coking and/or combustion chamber/valve carbon buildup? are you taking place to date upon every maintenance; spark plugs fuel filter pcv vlave etc? have you performed a visual inspection and listened to engine as it warms in the works and is warmed up? oftentimes in engine statute many factors may cause the thesame symptom(s)