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Thread: No cruise control downshift

  1. #1
    Potential Tuner
    Join Date
    Jun 2004
    Location
    Posts
    4

    No cruise control downshift

    Changed the part throttle downshift tables as per this forum and the car runs much better but when in cruise control there is no part throttle downshift just lugging. When the cruise control is turned off during part throttle acceleration the transmission downshifts. What needs to be changed to allow part throttle downshifts while in cruise control?

  2. #2
    Tuner
    Join Date
    May 2004
    Location
    Near Austin, TX
    Posts
    82

    Re: No cruise control downshift

    The first table called normal is what sounds like you modified. Copy that table to the cruise table.
    Because it must be Brent!&&\'05 FORD F-250 Diesel, baby

  3. #3
    Senior Tuner
    Join Date
    Nov 2002
    Location
    Central Florida
    Posts
    2,503

    Re: No cruise control downshift

    I left my cruise part-throttle table and cruise TCC apply/
    release tables stock. What you want for street driving
    is way different from what you want for highway peace,
    quiet and economy (presuming those are your cruise
    control interests). I would go and copy everything that
    has a cruise-specific table, back from your stock tune
    file (you did save your stock tune file, right?).

  4. #4
    Potential Tuner
    Join Date
    Jun 2004
    Location
    Posts
    4

    Re: No cruise control downshift

    I changed the cruise table to match the normal table and the transmission shifts as well as the normal mode.