Hello, I have repaired greater than 30000 vehicles in my career and I obsession to ask you questions since I am not there in person to assemble facts, data, or to test your vehicle. I may ask you to be in examination in my stead. If scrutiny is needed and you would rather not performance testing, I can have the funds 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 virtually the difficulty history. It currently has a master tech ascribed idle let breathe run valve and tps installed. without heartwarming anything, the last (used) ecu and my original, would govern in the car without this symptom.
subsequently I begin the car, the engine surges taking place amid 1200 and 2000 rpm incite and forth. I distorted the IAC and the TPS taking into consideration no change in symptoms. I have noticed that several Lexus SC's have this thesame issue. Prior to this I would have to adjust the idle keenness screw to lower the rpm and it would sustain for a while. Now, the engine is until the end of time surging to the dwindling where I cannot steer it for distress signal of damage to the steer train. Any experienced solution?