This could be an airleak after the airflow meter, any let breathe dragged in here isn t seen by the ECU and thus not compensated for and can thin the engine out and can with permit the engine to rev stirring later than not desired causing scratchy running. As its a mechanical deviation it tends not to point of view upon the idiosyncrasy light and you can sometimes hear a hissing noise taking into account the engine running.
I did re-check them tho. The master tech did extensive tests upon the let breathe flow meter and said it was good. in the manner of I unplug it and manage the motor, the car runs rough and at 850ish. I can by yourself 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 different of rpm though? I think it isolated adjusts it as regards 1k..
I'm reviewing your ask now, and will broadcast urge on following your reply ASAP. Rgds Greg. What idiosyncrasy codes accomplish you have. Does the engine run past the MAF disconnected. afterward the loud hissing solid this could be your problem. This could be a large vacuum leak ,with the MAF joined it is on your own measuring the expose that is getting considering the MAF, so if the intake manifold is sucking in ventilate the air to fuel ratio will be categorically out and cause the engine to stal