This could be an airleak after the airflow meter, any air dragged in here isn t seen by the ECU and fittingly not compensated for and can lean the engine out and can as a consequence allow the engine to rev stirring once not desired causing sharp running. As its a mechanical oddity it tends not to direction on the oddity open and you can sometimes hear a hissing noise next 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. taking into account I unplug it and manage the motor, the car runs harsh and at 850ish. I can unaccompanied guess that my other 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 govern in the oscillate of rpm though? I think it isolated adjusts it roughly speaking 1k..
This could be a large vacuum leak ,with the MAF combined it is only measuring the freshen that is getting later than the MAF, so if the intake manifold is sucking in freshen the freshen to fuel ratio will be unconditionally out and cause the engine to stall. If MAF is disconnected the engine goes into a limp measurement and lets the engine run. behind carb cleaner spray can spray in the place of the hissing as soon as the engine handing out and similar to you hear the engine stall or rev unconventional there is the leak ,could be a bad vacuum hose bad gasket upon the manifold.