Hello, I have repaired exceeding 30000 vehicles in my career and I habit to ask you questions back I am not there in person to stockpile facts, data, or to exam your vehicle. I may ask you to statute assay in my stead. If examination is needed and you would rather not con testing, I can allow my best advice, Fuel pressure?
I started the car happening this morning, it starts going on and runs at 1750 and within a minute or fittingly climbs more than 2500.. It is organization smooth though, just exaggeration well ahead than it should be. I as well as checked the throttle screw plate/return screw, on purpose turned it out and nothing changed. put it back up to exactly where it was. No vacuum leak sounds and every links verified. I feel good approximately them as I've been in there a bunch of times..
in the same way as I begin the car, the engine surges happening surrounded by 1200 and 2000 rpm urge on and forth. I misused the IAC and the TPS in the same way as no change in symptoms. I have noticed that several Lexus SC's have this similar issue. Prior to this I would have to familiarize the idle enthusiasm screw to humiliate the rpm and it would maintain for a while. Now, the engine is for all time surging to the narrowing where I cannot drive it for startle of damage to the steer train. Any experienced solution?