Hello, I have repaired over 30000 vehicles in my career and I dependence to question you questions previously I am not there in person to pile up facts, data, or to test your vehicle. I may ask you to put-on breakdown in my stead. If breakdown is needed and you would rather not affect testing, I can offer 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 tiny more practically the hardship history. It currently has a master tech recognized idle let breathe run valve and tps installed. without upsetting anything, the last (used) ecu and my original, would direct in the car without this symptom.
next I start the car, the engine surges going on surrounded by 1200 and 2000 rpm support and forth. I misrepresented the IAC and the TPS subsequent to no correct in symptoms. I have noticed that several Lexus SC's have this same issue. Prior to this I would have to get used to the idle readiness screw to subjugate the rpm and it would maintain for a while. Now, the engine is for all time surging to the point where I cannot steer it for scare of damage to the steer train. Any experienced solution?