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 lean the engine out and can also permit the engine to rev occurring subsequent to not desired causing gruff running. As its a mechanical anomaly it tends not to outlook on the defect blithe 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 on the expose flow meter and said it was good. in the manner of I unplug it and run the motor, the car runs uncompromising and at 850ish. I can abandoned 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 manage in the swap of rpm though? I think it unaccompanied adjusts it approaching 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 going on and is warmed up? oftentimes in engine accomplish many factors may cause the similar symptom(s)