Results 1 to 2 of 2

Thread: CM2100 Manual Truck RPMs hang when shifting

  1. #1
    Senior Member
    Join Date
    Aug 2019
    Posts
    142

    Default CM2100 Manual Truck RPMs hang when shifting

    Looking for help in getting pointed in the right direction. When shifting the rpms will sometimes not fall as fast to match the up shift. Could this be an issue with increased rail pressure or is there a way to alter rpm fall when off throttle? thank you

  2. #2
    Junior Member
    Join Date
    Nov 2019
    Posts
    11

    Default

    Quote Originally Posted by Twistedshafts View Post
    Looking for help in getting pointed in the right direction. When shifting the rpms will sometimes not fall as fast to match the up shift. Could this be an issue with increased rail pressure or is there a way to alter rpm fall when off throttle? thank you
    Fuel rail pressure, under 0mm3 column, try lowering/zeroing your numbers and see if helps. Should work, classic rail hang.

Similar Threads

  1. Base File 09 Manual Truck
    By Twistedshafts in forum Cummins 6.7L
    Replies: 1
    Last Post: November 6th, 2020, 01:25 AM
  2. Replies: 8
    Last Post: September 16th, 2013, 07:15 AM
  3. Throttle hang. E38 from an automatic now on a manual T-56
    By DRTHVDR in forum E37, E38 & E67 PFI ECM's
    Replies: 10
    Last Post: June 3rd, 2013, 08:35 PM
  4. Truck not shifting at comanded rpm?
    By lstruck in forum Tutorials
    Replies: 5
    Last Post: September 23rd, 2012, 10:28 AM
  5. shift rpms tis rpm or engine rpms
    By 69camaro5speed in forum 4speed RWD/FWD Transmission Tuning (incl T42)
    Replies: 8
    Last Post: October 25th, 2008, 06:01 AM

Posting Permissions

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