This could be an airleak after the airflow meter, any air dragged in here isn t seen by the ECU and appropriately not compensated for and can lean the engine out and can in addition to permit the engine to rev in the works considering not desired causing argumentative running. As its a mechanical defect it tends not to outlook upon the malformation well-ventilated and you can sometimes hear a hissing noise next the engine running.
I did re-check them tho. The master tech did extensive tests on the freshen flow meter and said it was good. in the manner of I unplug it and control the motor, the car runs harsh and at 850ish. I can unaided guess that my additional 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 direct in the interchange of rpm though? I think it and no-one else adjusts it with reference to 1k..
subsequent to I start the car, the engine surges in the works in the midst of 1200 and 2000 rpm back and forth. I tainted the IAC and the TPS similar to no tweak in symptoms. I have noticed that several Lexus SC's have this same issue. Prior to this I would have to acclimatize the idle enthusiasm screw to humiliate the rpm and it would preserve for a while. Now, the engine is all the time surging to the tapering off where I cannot drive it for bell of damage to the steer train. Any experienced solution?