This could be an airleak after the airflow meter, any let breathe dragged in here isn t seen by the ECU and as a result not compensated for and can lean the engine out and can afterward permit the engine to rev in the works behind not desired causing rasping running. As its a mechanical deviation it tends not to face on the aberration spacious and you can sometimes hear a hissing noise with 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. later I unplug it and rule the motor, the car runs harsh and at 850ish. I can single-handedly guess that my further rebuilt ecu has an issue, or the tps needs to be re-adjusted, or anyhow my maf has died in the midst of all this. I don't think the tps has that much run in the substitute of rpm though? I think it only adjusts it around 1k..
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