300D Transmission shiftiness - Mercedes-Benz Forum

LinkBack Thread Tools Display Modes
post #1 of 1 (permalink) Old 08-15-2011, 06:57 PM Thread Starter
BenzWorld Junior Member
Date registered: Aug 2011
Posts: 31
Mentioned: 0 Post(s)
Quoted: 2 Post(s)
(Thread Starter)
300D Transmission shiftiness

Hi, I have a 1981 300D with about 480K (km) on the clock and shiftiness is the Q: it seems to shift up too late and down too early. Cold shifts are quite jerky, and the rear end breaks out if we change while cornering in the wet. my climate is S-Cal dry. I'm new to the vacuum and diesel automatic things.
Engine cold 1-2 about 10-20 km/h; 2-3 about 35-40, 3-4 about 90 to III mark on speedo.
Engine hot 1-2 walking pace; 2-3 30, 3-4 60-70 according to the speedo, about 10% optimistic. Are these change speeds in the acceptable range? Once we hit top gear, everything smooths out and we seem to cruise effortlessly at 110-120km/h (boys in blue permitting and it's a sweet drive.
Vacuum at brake line is a mid-range 20, at trans line about 5. I've adjusted the trans modulator anticlockwise, with improvement, and replaced trans line dashpot, also noticed some improvement.
Switch engine off and we lose all vacuum in about 3-5 min. A leak somewhere, and does this affect trans changes? What other checks could I make?
Dieselroo is offline  
Sponsored Links

  Mercedes-Benz Forum > General Mercedes-Benz Forums > General Mercedes-Benz

Quick Reply

Register Now

In order to be able to post messages on the Mercedes-Benz Forum forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Please enter a password for your user account. Note that passwords are case-sensitive.


Confirm Password:
Email Address
Please enter a valid email address for yourself.

Email Address:


  • Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
    Thread Tools
    Show Printable Version Show Printable Version
    Email this Page Email this Page
    Display Modes
    Linear Mode Linear Mode

    Similar Threads
    Topic Author Forum Replies Last Post
    Will this 79 300D Wagon transmission fit my 81 300D Sedan? sshanky W123 E,CE,D,CD,TD,TE Class 0 12-16-2010 11:37 PM
    300D transmission DANSMB For Sale/Wanted/Trade/Giveaway 0 08-26-2009 10:09 PM
    '83 300D Transmission HELP! Twanoh Tom W123 E,CE,D,CD,TD,TE Class 3 04-05-2007 10:34 AM
    300D transmission barberhauler W123 E,CE,D,CD,TD,TE Class 4 03-17-2007 08:25 PM
    300D transmission kbbenz78 W123 E,CE,D,CD,TD,TE Class 0 10-30-2003 07:38 PM

    Posting Rules  
    You may post new threads
    You may post replies
    You may not post attachments
    You may not edit your posts

    BB code is On
    Smilies are On
    [IMG] code is On
    HTML code is Off
    Trackbacks are On
    Pingbacks are On
    Refbacks are On


    Title goes here

    video goes here
    description goes here. Read Full Story
    For the best viewing experience please update your browser to Google Chrome