This could be an airleak after the airflow meter, any expose dragged in here isn t seen by the ECU and therefore not compensated for and can thin the engine out and can plus permit the engine to rev up like not desired causing uncompromising running. As its a mechanical deformity it tends not to approach on the oddity spacious and you can sometimes hear a hissing noise subsequently the engine running.
I did re-check them tho. The master tech did extensive tests upon the air flow meter and said it was good. once I unplug it and control the motor, the car runs argumentative and at 850ish. I can isolated guess that my additional rebuilt ecu has an issue, or the tps needs to be re-adjusted, or anyhow my maf has died in the midst of every this. I don't think the tps has that much direct in the stand-in of rpm though? I think it lonesome adjusts it vis--vis 1k..
have you looked into throttle body coking and/or combustion chamber/valve carbon buildup? are you going on 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 show many factors may cause the similar symptom(s)