This could be an airleak after the airflow meter, any expose dragged in here isn t seen by the ECU and fittingly not compensated for and can thin the engine out and can next allow the engine to rev happening gone not desired causing sharp running. As its a mechanical deviation it tends not to turn on the defect fresh 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 freshen flow meter and said it was good. as soon as I unplug it and control the motor, the car runs uncompromising and at 850ish. I can unaccompanied guess that my supplementary 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 govern in the alternative of rpm though? I think it unaided adjusts it roughly 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 up and is warmed up? oftentimes in engine pretend many factors may cause the same symptom(s)