Results 1 to 2 of 2

Thread: 4L80E No Shift problem

  1. #1
    Join Date
    Mar 2000
    Location
    Sylvan Lake, Michigan, USA
    Posts
    52

    Question 4L80E No Shift problem

    1994 P-30. 6.5 TD Motor Home.

    Randomly the trans will not shift after a start. I'm not sure if it is first or second gear (second is default I believe). After shutting down and restarting all is ok. It stores codes 74 and 85. Has done this twice in the past few days. I just checked the codes and they are not there. I did replace the input speed sensor as a stab in the dark and I think the codes were in there before that, but I might be confused. Sorry for the not so clear description. Just thought that this might be a condition that someone has run into.

    Bill Carry
    Bill Carry
    Sylvan Lake Michigan
    '94 Georgie Boy Swinger 30' motor home
    6.5 TD front engine P-32 Chassis. GEP 400 replacement engine at 176000K.
    Stock except for remote PMD (inside the air conditioned motor home)
    Boost, EGT and Trans temp gage 260000 miles as of 10-14-19, all mine.

  2. #2
    Join Date
    Mar 2000
    Location
    Sylvan Lake, Michigan, USA
    Posts
    52

    Smile 4L80 No Shift problem

    Replaced the ignition switch and problem went away.
    Bill Carry
    Sylvan Lake Michigan
    '94 Georgie Boy Swinger 30' motor home
    6.5 TD front engine P-32 Chassis. GEP 400 replacement engine at 176000K.
    Stock except for remote PMD (inside the air conditioned motor home)
    Boost, EGT and Trans temp gage 260000 miles as of 10-14-19, all mine.

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •