This could be an airleak after the airflow meter, any ventilate dragged in here isn t seen by the ECU and fittingly not compensated for and can lean the engine out and can then permit the engine to rev going on in imitation of not desired causing scratchy running. As its a mechanical anomaly it tends not to twist upon the aberration open and you can sometimes listen a hissing noise behind 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. with I unplug it and direct the motor, the car runs severe and at 850ish. I can unaided guess that my other 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 control in the alternative of rpm though? I think it isolated adjusts it just about 1k..
have you looked into throttle body coking and/or combustion chamber/valve carbon buildup? are you taking place to date on all maintenance; spark plugs fuel filter pcv vlave etc? have you performed a visual inspection and listened to engine as it warms taking place and is warmed up? oftentimes in engine take steps many factors may cause the thesame symptom(s)