Hello, I have repaired higher than 30000 vehicles in my career and I infatuation to ask you questions before I am not there in person to gather together facts, data, or to test your vehicle. I may ask you to produce a result investigation in my stead. If study is needed and you would rather not show testing, I can present my best advice, Fuel pressure?
I started the car in the works this morning, it starts occurring and runs at 1750 and within a minute or fittingly climbs greater than 2500.. It is supervision mild though, just showing off sophisticated than it should be. I after that checked the throttle screw plate/return screw, carefully turned it out and nothing changed. put it encourage to exactly where it was. No vacuum leak sounds and every associates verified. I air good not quite them as I've been in there a bunch of times..
similar to I start the car, the engine surges up in the middle of 1200 and 2000 rpm assist and forth. I untouched the IAC and the TPS later no regulate in symptoms. I have noticed that several Lexus SC's have this thesame issue. Prior to this I would have to get used to the idle eagerness screw to belittle the rpm and it would retain for a while. Now, the engine is forever surging to the lessening where I cannot drive it for fright of broken to the drive train. Any experienced solution?