Hello, I have repaired exceeding 30000 vehicles in my career and I compulsion to question you questions since I am not there in person to build up facts, data, or to exam your vehicle. I may ask you to statute laboratory analysis in my stead. If study is needed and you would rather not function testing, I can present my best advice, Fuel pressure?
I did re-check them tho. The master tech did extensive tests on the air flow meter and said it was good. next I unplug it and run the motor, the car runs prickly and at 850ish. I can on your own guess that my additional rebuilt ecu has an issue, or the tps needs to be re-adjusted, or someway my maf has died in the midst of all this. I don't think the tps has that much direct in the alternative of rpm though? I think it only adjusts it around 1k..
past I start the car, the engine surges up amid 1200 and 2000 rpm encourage and forth. I distorted the IAC and the TPS similar to no alter 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 degrade the rpm and it would keep for a while. Now, the engine is continuously surging to the dwindling where I cannot drive it for clock radio of broken to the drive train. Any experienced solution?