Hello, I have repaired beyond 30000 vehicles in my career and I need to ask you questions before I am not there in person to pile up facts, data, or to test your vehicle. I may question you to exploit examination in my stead. If psychoanalysis is needed and you would rather not play a role testing, I can find 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 tell you a little more approximately the misfortune history. It currently has a master tech official idle freshen govern valve and tps installed. without distressing anything, the last (used) ecu and my original, would rule in the car without this symptom.
as soon as I begin the car, the engine surges occurring between 1200 and 2000 rpm encourage and forth. I tainted the IAC and the TPS gone no modify in symptoms. I have noticed that several Lexus SC's have this same issue. Prior to this I would have to familiarize the idle quickness screw to degrade the rpm and it would preserve for a while. Now, the engine is until the end of time surging to the dwindling where I cannot steer it for fright of damage to the steer train. Any experienced solution?