Hello, I have repaired beyond 30000 vehicles in my career and I need to ask you questions since I am not there in person to pile up facts, data, or to test your vehicle. I may question you to work psychiatry in my stead. If testing is needed and you would rather not produce a result 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 say you a little more not quite the misery history. It currently has a master tech endorsed idle ventilate govern valve and tps installed. without distressing anything, the last (used) ecu and my original, would direct in the car without this symptom.
when I start the car, the engine surges occurring with 1200 and 2000 rpm help and forth. I misrepresented the IAC and the TPS subsequently no correct in symptoms. I have noticed that several Lexus SC's have this same issue. Prior to this I would have to become accustomed the idle keenness screw to belittle the rpm and it would preserve for a while. Now, the engine is each time surging to the lessening where I cannot drive it for bell of broken to the drive train. Any experienced solution?