Hello, I have repaired more than 30000 vehicles in my career and I compulsion to question you questions since I am not there in person to assemble facts, data, or to test your vehicle. I may ask you to put on an act investigation in my stead. If psychiatry is needed and you would rather not play testing, I can provide my best advice, Fuel pressure?
I did re-check them tho. The master tech did extensive tests upon the let breathe flow meter and said it was good. like I unplug it and control the motor, the car runs argumentative and at 850ish. I can only guess that my other rebuilt ecu has an issue, or the tps needs to be re-adjusted, or someway my maf has died in the midst of all this. I don't think the tps has that much rule in the substitute of rpm though? I think it isolated adjusts it around 1k..
as soon as I start the car, the engine surges occurring amid 1200 and 2000 rpm assist and forth. I changed the IAC and the TPS later no modify in symptoms. I have noticed that several Lexus SC's have this thesame issue. Prior to this I would have to acclimatize the idle swiftness screw to demean the rpm and it would preserve for a while. Now, the engine is forever surging to the point where I cannot drive it for fear of broken to the steer train. Any experienced solution?