Narrowing down no 4th gear issues Need Help - Mercedes-Benz Forum

LinkBack Thread Tools Display Modes
post #1 of 1 (permalink) Old 04-08-2012, 08:05 PM Thread Starter
BenzWorld Newbie
Date registered: Apr 2012
Vehicle: 82 300SD
Posts: 2
Mentioned: 0 Post(s)
Quoted: 0 Post(s)
(Thread Starter)
Narrowing down no 4th gear issues Need Help

I have a recently acquired 82 300SD and it does not shift into top gear. It runs about 4000RPM at 30mph so I know a gear is missing.

I have been hunting everywhere online to try and figure this out and have come up with many possible solution and am eliminating them as best I can.
I started with the possibility of a vacuum leak so I bypassed the EGR vaccum lines and tested the vacuum reading at the Modulator but it reads fine at idle. I tested the Modulator for leaks but it holds vacuum just fine.
The Kickdown button under the gas pedal is not stuck but I still need to test the solenoid.

I am going to try and readjust the gear shifter linkage next. Just to make sure everything is lined up properly.

On my ToDo list is Check kickdown solenoid, check and adjust modulator pressure. If those don't work than my next possibilities are a bad governor or possibly the K2 clutch.

This is everything I have found that could be the cause of this issue.
Have I missed anything anybody can think of? Any advice anybody can give would be greatly appreciated. Thank you in advance.
Drako155 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
    Narrowing of the American mind? N_Jay Off-Topic 18 02-20-2012 01:25 PM
    Narrowing it down. Triggerhappy W202 C-Class 1 03-29-2010 05:33 PM
    Narrowing tranny leak down, need opinions CBFintheODD W210 E-Class 3 10-28-2008 11:20 AM
    Gap Is Narrowing in Battleground States Jayhawk Off-Topic 5 07-25-2008 01:28 PM
    Suspension noise, narrowing down possibilities Zackb951 W210 E-Class 9 10-05-2007 09:45 AM

    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