Hello, I have repaired exceeding 30000 vehicles in my career and I compulsion to ask you questions in the past I am not there in person to build up facts, data, or to test your vehicle. I may question you to pretense examination in my stead. If study is needed and you would rather not feat testing, I can have the funds for my best advice, Fuel pressure?
I started the car taking place this morning, it starts up and runs at 1750 and within a minute or for that reason climbs greater than 2500.. It is supervision mild though, just habit highly developed than it should be. I also checked the throttle screw plate/return screw, deliberately turned it out and nothing changed. put it incite to exactly where it was. No vacuum leak sounds and every associates verified. I setting fine approximately them as I've been in there a bunch of times..
with I start the car, the engine surges happening amongst 1200 and 2000 rpm assist and forth. I changed the IAC and the TPS behind no fine-tune in symptoms. I have noticed that several Lexus SC's have this same issue. Prior to this I would have to acclimatize the idle eagerness screw to belittle the rpm and it would retain for a while. Now, the engine is until the end of time surging to the lessening where I cannot steer it for panic of broken to the steer train. Any experienced solution?