Hello, I have repaired beyond 30000 vehicles in my career and I infatuation to question you questions previously I am not there in person to stockpile facts, data, or to exam your vehicle. I may question you to play psychiatry in my stead. If scrutiny is needed and you would rather not discharge duty testing, I can come up with the money for my best advice, Fuel pressure?
Thanks for your response. I just checked what you mentioned, that I hadn't already checked, except fuel pressure.Let me say you a little more nearly the difficulty history. It currently has a master tech official idle ventilate run valve and tps installed. without distressing anything, the last (used) ecu and my original, would run in the car without this symptom.
in the manner of I begin the car, the engine surges happening in the middle of 1200 and 2000 rpm back and forth. I misused the IAC and the TPS like no alter in symptoms. I have noticed that several Lexus SC's have this thesame issue. Prior to this I would have to acclimatize the idle quickness screw to belittle the rpm and it would hold for a while. Now, the engine is every time surging to the reduction where I cannot steer it for buzzer of broken to the drive train. Any experienced solution?