Auto transmission question? - Mercedes-Benz Forum

 
LinkBack Thread Tools Display Modes
post #1 of 9 (permalink) Old 05-23-2010, 09:09 AM Thread Starter
BenzWorld Newbie
 
Date registered: May 2010
Posts: 4
Mentioned: 0 Post(s)
Quoted: 0 Post(s)
(Thread Starter)
Auto transmission question?

Hi guys, Im new here after buying a 1997 E320 V6,

I have noticed that the car has started jerking from a standstill when you select drive and it slips sometimes from 1st to 2nd gear... I have tried checking the Oil level but have learned of MBs crazy reluctance to provide a dipstick...

Is the transmission likely to be shot or just low/overfilled with oil?

Also, how would I tell what kind of transmission it has as there are a few according to some sources?

Thanks guys, and it's nice to be here!!

Steve
stemac76 is offline  
Sponsored Links
Advertisement
 
post #2 of 9 (permalink) Old 05-23-2010, 01:28 PM
BenzWorld Elite
 
Date registered: Jul 2004
Posts: 4,726
Mentioned: 2 Post(s)
Quoted: 276 Post(s)
A 1997 E320 should be a straight six, not a V6, with a 722.6 5 speed transmission. By all means check the fluid level.
deanyel is offline  
post #3 of 9 (permalink) Old 05-23-2010, 01:37 PM Thread Starter
BenzWorld Newbie
 
Date registered: May 2010
Posts: 4
Mentioned: 0 Post(s)
Quoted: 0 Post(s)
(Thread Starter)
Hi, it's definately a V6 no doubt about that, it is a very late '97 build...

There is just a black and red cap on the top of the filler tube and no dipstick?

Steve
stemac76 is offline  
post #4 of 9 (permalink) Old 05-23-2010, 03:51 PM
BenzWorld Elite
 
MarcusF's Avatar
 
Date registered: Apr 2005
Vehicle: 2002 CLK430
Location: Southern California
Posts: 1,681
Mentioned: 2 Post(s)
Quoted: 3 Post(s)
Greetings Steve,

It seems to me that Mercedes-Benz didn’t include a dipstick because they felt it would result in the average owner or corner mechanic doing more harm than good. When adding fluid, the fluid level is supposed to be checked at two temperatures. Low fluid can cause funky shifting. MB service doc 27A95105 has details, but in a nutshell, low fluid allows air bubbles to form. On the other end of the spectrum, overfilling will damage the transmission. This is why *I think* it has no dipstick; Jiffy Lube type “techs” top off everything.

The question is, why would someone have to regularly check ATF levels? Fluid doesn’t evaporate. Unlike motor oil, it doesn’t burn. That leaves a leak as the only way for a 722.6 transmission to get low on fluid. With normal maintenance, most leaks are detected. Unfortunately, many people claim all those checks that are performed during routine services are unnecessary. Without checking, leaks go undetected.

If I were you, I’d check it for leaks and dump the codes. The original equipment transmission harness plug adapter has an o-ring that has been known to go bad. If the plug adapter on your car is wet, you could just replace the o-ring. A new harness plug adapter is less than $10, and the upgraded o-ring is $2. I had my local dealer change them both on my car. Mine wasn’t leaking, this was preventative maintenance. The new style o-ring is a one time fix, as its new design allegedly won’t leak in the future. While fixing the leak, I’d recommend changing the fluid and filter, and having them set the adaptation.

If the plug adapter leaks and someone ignores the wet spot on the garage floor, the ATF could wick up the wiring harness to the TCU. At that point, someone may recommend a new $300 wiring harness, the plug adapter, and new o-rings. I don’t know whether they’ll recommend cleaning the wet card in the TCU, or replacing it.

Dumping the codes will tell you if an electronic malady (such as a bad speed sensor signal) has been detected.

If you want to check your fluid level, Mercedes-Benz sells a dipstick. The dipstick is part number 001-989-21-03-10 and costs less than $20 at the dealer parts counter.
MarcusF is offline  
post #5 of 9 (permalink) Old 05-23-2010, 04:02 PM Thread Starter
BenzWorld Newbie
 
Date registered: May 2010
Posts: 4
Mentioned: 0 Post(s)
Quoted: 0 Post(s)
(Thread Starter)
Thanks ever so much for the comprehensive reply, it has been a real help!! I'll check all those things and buy a dipstick, bearing in mind, mine is a 3.2 V6, will it still have the same box as the I6 engine?


Steve
stemac76 is offline  
post #6 of 9 (permalink) Old 05-23-2010, 04:47 PM
BenzWorld Elite
 
Date registered: Jul 2004
Posts: 4,726
Mentioned: 2 Post(s)
Quoted: 276 Post(s)
Your transmission would be a 722.6 regardless of whether it's a 1997 straight six or a 1998 V6.
deanyel is offline  
post #7 of 9 (permalink) Old 05-23-2010, 05:00 PM Thread Starter
BenzWorld Newbie
 
Date registered: May 2010
Posts: 4
Mentioned: 0 Post(s)
Quoted: 0 Post(s)
(Thread Starter)
Ok, thanks for that
stemac76 is offline  
post #8 of 9 (permalink) Old 05-23-2010, 10:48 PM
BenzWorld Elite
 
MarcusF's Avatar
 
Date registered: Apr 2005
Vehicle: 2002 CLK430
Location: Southern California
Posts: 1,681
Mentioned: 2 Post(s)
Quoted: 3 Post(s)
Quote:
Originally Posted by stemac76 View Post
Thanks ever so much for the comprehensive reply, it has been a real help!! I'll check all those things and buy a dipstick, bearing in mind, mine is a 3.2 V6, will it still have the same box as the I6 engine?


Steve
As far as I know, E320's had either a 722.600, 722.605, 722.607, 722.626 (CDI), or a 722.664 (if it's a 4-matic).
MarcusF is offline  
post #9 of 9 (permalink) Old 05-23-2010, 10:57 PM
Outstanding Contributor
 
eric242340's Avatar
 
Date registered: May 2007
Vehicle: Zotye Auto 1.5T T600 2016
Location: The wild west of the Far East
Posts: 52,163
Mentioned: 3 Post(s)
Quoted: 290 Post(s)
Follow the link and do some reading, there is a lot of info there.

http://www.benzworld.org/forums/w210...ain-drive.html

ERIC.

___________________________________________
"I am enclosing two tickets to the first night of my new play; bring a friend, if you have one."
- George Bernard Shaw to Winston Churchill.

"Cannot possibly attend first night, will attend second ... if there is one."
- Winston Churchill, in response.
eric242340 is offline  
Sponsored Links
Advertisement
 
Reply

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

Quick Reply
Message:
Options

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

Password:


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

Email Address:
OR

Log-in











  • 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
    question about auto and manual transmission option infra R129 SL-Class 9 03-14-2010 08:11 PM
    Auto Transmission Shift Question TechGuru W124 E,CE,D,TD Class 14 06-05-2009 04:04 AM
    Question about auto transmission vido76 G-Class 1 07-09-2008 12:33 AM
    W115 auto transmission question Green230 Vintage Mercedes-Benz 0 05-19-2008 02:16 AM
    Auto Transmission Oil Change Question captnpete G-Class 12 02-15-2006 05:40 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

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