Hello, I have repaired more than 30000 vehicles in my career and I need to question you questions back I am not there in person to accumulate facts, data, or to exam your vehicle. I may ask you to put-on psychoanalysis in my stead. If laboratory analysis is needed and you would rather not operate testing, I can give 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. in the manner of I unplug it and direct the motor, the car runs coarse and at 850ish. I can single-handedly guess that my supplementary rebuilt ecu has an issue, or the tps needs to be re-adjusted, or someway my maf has died in the midst of every this. I don't think the tps has that much run in the substitute of rpm though? I think it single-handedly adjusts it around 1k..
in the manner of I start the car, the engine surges happening amongst 1200 and 2000 rpm back and forth. I distorted the IAC and the TPS bearing in mind no bend in symptoms. I have noticed that several Lexus SC's have this thesame issue. Prior to this I would have to adjust the idle promptness screw to degrade the rpm and it would withhold for a while. Now, the engine is forever surging to the lessening where I cannot drive it for alarm bell of damage to the steer train. Any experienced solution?