Hello, I have repaired higher than 30000 vehicles in my career and I need to question you questions before I am not there in person to assemble facts, data, or to exam your vehicle. I may ask you to play psychoanalysis in my stead. If scrutiny is needed and you would rather not decree testing, I can manage to pay for my best advice, Fuel pressure?
I did re-check them tho. The master tech did extensive tests upon the expose flow meter and said it was good. later I unplug it and govern the motor, the car runs uncompromising and at 850ish. I can deserted 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 rule in the interchange of rpm though? I think it unaccompanied adjusts it with reference to 1k..
bearing in mind I begin the car, the engine surges going on in the midst of 1200 and 2000 rpm put up to and forth. I misused the IAC and the TPS in the same way as no modify in symptoms. I have noticed that several Lexus SC's have this thesame issue. Prior to this I would have to adapt the idle readiness screw to degrade the rpm and it would maintain for a while. Now, the engine is every time surging to the lessening where I cannot steer it for distress of damage to the drive train. Any experienced solution?