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I have a faulty pedal positon sensor that was causing all the issues -- limp home, gearbox fault, no /ASC.
Diagnosis was pedal position sensor. I came to believe the only solution was to bight the bullet and buy a new throttle body. Prices ranged from about 2400 to 3000 USD.
Have not put it in yet. I am thibking that there are other components of the throttle body that could age out similarly and best to replace the whole shebang.
Use the advance search feature with key word throttle body. You will find threads for a company that rebuilds the throttle body for a lot less than a new one. They have a very good reputation for service.