This could be an airleak after the airflow meter, any let breathe dragged in here isn t seen by the ECU and therefore not compensated for and can thin the engine out and can as well as permit the engine to rev up as soon as not desired causing brusque running. As its a mechanical fault it tends not to slant on the irregularity lighthearted and you can sometimes hear a hissing noise when 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. in the same way as I unplug it and manage 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 anyhow my maf has died in the midst of every this. I don't think the tps has that much manage in the alternative of rpm though? I think it and no-one else adjusts it more or less 1k..
like I begin the car, the engine surges occurring between 1200 and 2000 rpm encourage and forth. I tainted the IAC and the TPS afterward no fine-tune in symptoms. I have noticed that several Lexus SC's have this similar issue. Prior to this I would have to accustom yourself the idle promptness screw to humiliate the rpm and it would maintain for a while. Now, the engine is continually surging to the reduction where I cannot steer it for bell of damage to the steer train. Any experienced solution?