Hello, I have repaired more than 30000 vehicles in my career and I obsession to question you questions previously I am not there in person to hoard facts, data, or to exam your vehicle. I may question you to function psychoanalysis in my stead. If psychotherapy is needed and you would rather not perform testing, I can offer my best advice, Fuel pressure?
I did re-check them tho. The master tech did extensive tests on the freshen flow meter and said it was good. taking into account I unplug it and direct the motor, the car runs prickly 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 all this. I don't think the tps has that much control in the vary of rpm though? I think it without help adjusts it in the region of 1k..
taking into account I begin the car, the engine surges in the works amongst 1200 and 2000 rpm help and forth. I distorted the IAC and the TPS in the same way as no fiddle with in symptoms. I have noticed that several Lexus SC's have this thesame issue. Prior to this I would have to familiarize the idle speed screw to lower the rpm and it would keep for a while. Now, the engine is forever surging to the narrowing where I cannot steer it for panic of damage to the steer train. Any experienced solution?