Parts Catalog Accessories Catalog How To Articles Tech Forums
Call Pelican Parts at 888-280-7799
Shopping Cart Cart | Project List | Order Status | Help



Go Back   PeachParts Mercedes-Benz Forum > Mercedes-Benz Tech Information and Support > Diesel Discussion

Reply
 
LinkBack Thread Tools Display Modes
  #1  
Old 07-30-2005, 09:44 PM
H-townbenzoboy's Avatar
Now Y2K Compliant
 
Join Date: Jul 2003
Location: Houston, TX
Posts: 4,339
Gear shift selector is inoperable

Today, I was in the 300D, I pulled into a parking space and moved the gear shift selector to P. I noticed that the selector was very loose, and it did not shift to park, it just stayed in drive. I moved the selector back and forth repeatedly, with no shifting. So, I wasn't going to leave it running in the lot, so I had to shut it down and call a tow truck. So, now I'm home, and the car is here as well. I had new shifter bushings installed about 2-3 weeks ago, so that can't be the problem. I'm suspecting that it is the locknut that attaches the selector rod to the lower lever that's causing the problems, but I don't have a lift to get under the car to an inspection, so to the indy it is. What could be the cause if my guess diagnosis is wrong?
-Joe

__________________
'81 MB 300SD, '82 MB 300D Turbo (sold/RIP), '04 Lincoln Town Car Ultimate

Sooner or later every car falls apart, ours does it later!
-German Narrator in a MB Promotion Film about the then brand new W123.
Reply With Quote
  #2  
Old 07-30-2005, 09:51 PM
t walgamuth's Avatar
dieselarchitect
 
Join Date: Apr 2005
Location: Lafayette Indiana
Posts: 38,934
it sounds

to me like your shift rod fell off. the clips that hold them on are as i remember a little unusual and perhaps werent clipped on tight enough.

tom w
__________________
[SIGPIC] Diesel loving autocrossing grandpa Architect. 08 Dodge 3/4 ton with Cummins & six speed; I have had about 35 benzes. I have a 39 Studebaker Coupe Express pickup in which I have had installed a 617 turbo and a five speed manual.[SIGPIC]

..I also have a 427 Cobra replica with an aluminum chassis.
Reply With Quote
  #3  
Old 07-30-2005, 09:52 PM
BIGRED's Avatar
Registered User
 
Join Date: Mar 2003
Location: Coarsegold Ca
Posts: 694
Does it feel like it is shifting or does it feel free and loose?

It would seem that the rod that connects to the trans popped out. If so the mechanic that put in the bushing should foot the tab for the troubles.

Don
__________________
1980 300TD-T (82 Turbo and Trans) 159,000 Miles "Jackie-O"
1983 300SD 272,000 Miles "Aristotle"
1987 Jeep Wagoneer Limited - keeps the MB's off the ice and out of the snow
1994 BMW 530it
Reply With Quote
  #4  
Old 07-31-2005, 12:57 AM
H-townbenzoboy's Avatar
Now Y2K Compliant
 
Join Date: Jul 2003
Location: Houston, TX
Posts: 4,339
Quote:
Originally Posted by BIGRED
Does it feel like it is shifting or does it feel free and loose?

It would seem that the rod that connects to the trans popped out. If so the mechanic that put in the bushing should foot the tab for the troubles.

Don
It feels free and loose. The bushing that was replaced was the easiest one to access, I can't really give a good location of it, but I watched the entire procedure. Not sure if that bushing was located anywhere near the rod in question or not. I'm hoping all this means is that the locknut on the selector rod needs a little tightening up.
-Joe
__________________
'81 MB 300SD, '82 MB 300D Turbo (sold/RIP), '04 Lincoln Town Car Ultimate

Sooner or later every car falls apart, ours does it later!
-German Narrator in a MB Promotion Film about the then brand new W123.
Reply With Quote
  #5  
Old 07-31-2005, 01:16 AM
H-townbenzoboy's Avatar
Now Y2K Compliant
 
Join Date: Jul 2003
Location: Houston, TX
Posts: 4,339
Oh yeah, I also forgot to ask, does the transmission being stuck in drive have any effect on the vacuum system? I read somewhere that the turbodiesel transmissions have some sort of vacuum control on them so they'll shift smmother. Since it's been stuck in drive, I have to lock the doors manually, and open the trunk with the key.
-Joe
__________________
'81 MB 300SD, '82 MB 300D Turbo (sold/RIP), '04 Lincoln Town Car Ultimate

Sooner or later every car falls apart, ours does it later!
-German Narrator in a MB Promotion Film about the then brand new W123.
Reply With Quote
  #6  
Old 07-31-2005, 08:10 AM
t walgamuth's Avatar
dieselarchitect
 
Join Date: Apr 2005
Location: Lafayette Indiana
Posts: 38,934
well

it sounds like you have no vacuum. there is vacuum to the shift modulator but i dont know that lack of vac can cause a shift lockup, but it seems like a remote possibility, but not the other way around i wouldnt think.

tom w
__________________
[SIGPIC] Diesel loving autocrossing grandpa Architect. 08 Dodge 3/4 ton with Cummins & six speed; I have had about 35 benzes. I have a 39 Studebaker Coupe Express pickup in which I have had installed a 617 turbo and a five speed manual.[SIGPIC]

..I also have a 427 Cobra replica with an aluminum chassis.
Reply With Quote
  #7  
Old 07-31-2005, 12:29 PM
BIGRED's Avatar
Registered User
 
Join Date: Mar 2003
Location: Coarsegold Ca
Posts: 694
If you noticed the transmission shifting harder after the mechanic replaced the bushing, then he also disconnected the vacuum supply line to the modulator on the trans. That would cause a bleeding out of vacuum, hense no door locks. If so, find a new mechanic because between the shifter and a loose vacuum line....I would hate to think what damage he would cause in doing something like.........ummm adjusting valves.

Don
__________________
1980 300TD-T (82 Turbo and Trans) 159,000 Miles "Jackie-O"
1983 300SD 272,000 Miles "Aristotle"
1987 Jeep Wagoneer Limited - keeps the MB's off the ice and out of the snow
1994 BMW 530it
Reply With Quote
  #8  
Old 07-31-2005, 01:24 PM
Craig
Guest
 
Posts: n/a
Quote:
Originally Posted by t walgamuth
it sounds like you have no vacuum. there is vacuum to the shift modulator but i dont know that lack of vac can cause a shift lockup, but it seems like a remote possibility, but not the other way around i wouldnt think.

tom w
I assume you have not been running the car since it has been stuck in gear. The vacuum tank only has enough capacity for locking and unlocking the doors (mayby) 6-8 times. If you haven't been able to start the car to recharge the tank, you may just be out of vacuum. That will fix itself when you run for a few seconds.
Reply With Quote
  #9  
Old 07-31-2005, 02:47 PM
H-townbenzoboy's Avatar
Now Y2K Compliant
 
Join Date: Jul 2003
Location: Houston, TX
Posts: 4,339
Quote:
Originally Posted by Craig
I assume you have not been running the car since it has been stuck in gear. The vacuum tank only has enough capacity for locking and unlocking the doors (mayby) 6-8 times. If you haven't been able to start the car to recharge the tank, you may just be out of vacuum. That will fix itself when you run for a few seconds.
That explains it. Thanks.
-Joe

__________________
'81 MB 300SD, '82 MB 300D Turbo (sold/RIP), '04 Lincoln Town Car Ultimate

Sooner or later every car falls apart, ours does it later!
-German Narrator in a MB Promotion Film about the then brand new W123.
Reply With Quote
Reply

Bookmarks


Posting Rules
You may not post new threads
You may not 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 On
Trackbacks are On
Pingbacks are On
Refbacks are On


Similar Threads
Thread Thread Starter Forum Replies Last Post
83 240D tranny won't shift past 2nd gear. dmorrison Tech Help 16 10-31-2018 08:14 PM
W210 Won't shift out of first gear... 95s420 Tech Help 5 06-01-2004 02:08 PM
89-300ce harsh 1-2 gear shift. 89-300ce Tech Help 0 04-21-2004 12:34 PM
removal of gear shift PAUL GIVENS Tech Help 1 05-20-2003 05:41 PM
Automatic Gear shift indicator. zaphiri Tech Help 7 11-20-2001 10:07 AM



All times are GMT -4. The time now is 10:05 PM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2025, vBulletin Solutions, Inc.
Search Engine Optimization by vBSEO 3.6.0
Copyright 2024 Pelican Parts, LLC - Posts may be archived for display on the Peach Parts or Pelican Parts Website -    DMCA Registered Agent Contact Page