Hello, I have repaired on top of 30000 vehicles in my career and I infatuation to question you questions back I am not there in person to hoard facts, data, or to exam your vehicle. I may question you to affect scrutiny in my stead. If investigation is needed and you would rather not enactment testing, I can find the money for my best advice, Fuel pressure?
I started the car up this morning, it starts occurring and runs at 1750 and within a minute or consequently climbs on top of 2500.. It is direction mild though, just way highly developed than it should be. I with checked the throttle screw plate/return screw, deliberately turned it out and nothing changed. put it encourage to exactly where it was. No vacuum leak sounds and all links verified. I feel fine approximately them as I've been in there a bunch of times..
when I begin the car, the engine surges occurring amid 1200 and 2000 rpm urge on and forth. I misused the IAC and the TPS with no modify in symptoms. I have noticed that several Lexus SC's have this similar issue. Prior to this I would have to adapt the idle zeal screw to demean the rpm and it would maintain for a while. Now, the engine is continually surging to the tapering off where I cannot steer it for distress signal of damage to the drive train. Any experienced solution?