This could be an airleak after the airflow meter, any let breathe dragged in here isn t seen by the ECU and consequently not compensated for and can lean the engine out and can as well as permit the engine to rev taking place later not desired causing brusque running. As its a mechanical anomaly it tends not to outlook on the aberration fresh and you can sometimes hear a hissing noise past 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. bearing in mind I unplug it and run the motor, the car runs gruff and at 850ish. I can forlorn 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 run in the alternating of rpm though? I think it only adjusts it almost 1k..
This could be a large vacuum leak ,with the MAF linked it is unaccompanied measuring the expose that is getting later the MAF, for that reason if the intake manifold is sucking in let breathe the air to fuel ratio will be very out and cause the engine to stall. If MAF is disconnected the engine goes into a limp measurement and lets the engine run. once carb cleaner spray can spray can in the area of the hissing as soon as the engine government and as soon as you hear the engine stall or rev unconventional there is the leak ,could be a bad vacuum hose bad gasket upon the manifold.