5.7 Liter Diesel trans problem

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Other Cadillac Engines Discussion, 5.7 Liter Diesel trans problem in Cadillac Engine Discussion; Will not shift on its own. Just hangs in any gear. It will shift from 1 to 3rd if you ...
  1. #1
    tedasaurus is offline Cadillac Owners Fanatic
    Automobile(s): 1981 Fleetwood, 1994 Fleetwood
    Join Date
    Jul 2004
    Dallas, TX

    5.7 Liter Diesel trans problem

    Will not shift on its own. Just hangs in any gear. It will shift from 1 to 3rd if you manually shift it using the column. Anyone have a clue?

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  3. #2
    caddyman2005 is offline Cadillac Owners Member
    Automobile(s): Cadillac
    Join Date
    Dec 2006

    Re: 5.7 Liter Diesel trans problem

    Check for vacuum at the vacuum modulator. check for vacuum leaks from the assist pump to the accessorys. does the a/c blow at the right vents. the assist pump is where the distributor would be in a gas engine (center rear)

  4. #3
    carnut is offline Cadillac Owners Master
    Automobile(s): 1988 Allante. 2005 Jag XK8, 1988 Mercedes Benz 300 SE
    Join Date
    Feb 2003

    Re: 5.7 Liter Diesel trans problem

    Could also be a stripped plastic governor gear. Or the weights on the governor stuck. Get a manual that shows how to access the governor. Its accessed from the trans case, located close to the tailshaft under a tin cover held in place with a snap ring.

  5. #4
    awadecki is offline Cadillac Owners Enthusiast
    Automobile(s): 76 Eldo (54k), 76 Eldo (52k), 78 Eldo (9k), 85 Deville (43k)
    Join Date
    Jun 2005

    Re: 5.7 Liter Diesel trans problem

    What car is this? I don't believe it's any that you've listed. The first thing I'd check is the TV cable to make sure it's adjusted properly. It'll hang up on shifts like this is it's way out of whack.

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