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Thread: L77 limited throttle

  1. #1
    New Member
    Join Date
    Mar 2009
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    8

    Default L77 limited throttle

    Hi guys,
    Have a weird problem with a 2012 l77 engine with 6l80e. Its in a converted car. Its not a wiring issue.
    All modules have been reflashed with TIS.

    the pedal position data reads fine, but actual throttle position is reading low, with no fault codes.

    In first gear max throttle opening is around 22%, once in second gear goes to 40%, and third gear and above i can get around 70%. Its like its torque limiting, but way extreme.

    Any ideas, im thinking maybe corrupted ecu? Its a 2012 engine as we ell so throttle body will be fine. It is a 2013 trans but have flashed the 2012 OS, and shifts gears fine.

  2. #2
    Joe (Moderator) joecar's Avatar
    Join Date
    Apr 2003
    Posts
    28,403

    Default

    Is the ECM E38 or E67...?

    Which throttle position pids are you logging...?

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