Hello, I have repaired greater than 30000 vehicles in my career and I need to ask you questions before I am not there in person to stockpile facts, data, or to exam your vehicle. I may question you to produce an effect chemical analysis in my stead. If investigation is needed and you would rather not doing testing, I can have enough money my best advice, Fuel pressure?
I started the car occurring this morning, it starts up and runs at 1750 and within a minute or as a result climbs higher than 2500.. It is giving out mild though, just pretentiousness well ahead than it should be. I furthermore checked the throttle screw plate/return screw, purposefully turned it out and nothing changed. put it back to exactly where it was. No vacuum leak sounds and every associates verified. I character fine practically them as I've been in there a bunch of times..
subsequent to I begin the car, the engine surges in the works surrounded by 1200 and 2000 rpm urge on and forth. I untouched the IAC and the TPS subsequently no change in symptoms. I have noticed that several Lexus SC's have this same issue. Prior to this I would have to acclimatize the idle keenness screw to degrade the rpm and it would hold for a while. Now, the engine is for all time surging to the tapering off where I cannot steer it for dread of broken to the steer train. Any experienced solution?