Automatic transmission clicking noise - Mercedes-Benz Forum

 
LinkBack Thread Tools Display Modes
post #1 of 1 (permalink) Old 05-22-2013, 06:46 PM Thread Starter
BenzWorld Newbie
 
Date registered: Dec 2011
Posts: 3
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
(Thread Starter)
Automatic transmission clicking noise

Hi all,

First, thank you for taking the time to read this posting. I am new to repair of mercedes, but have been repairing vehicles for the past 20 years.

I own a 2004 Mercedes A168 with automatic transmission (model 722.7). The car transmission has started to make a clicking noise while driving at the time when transmission is switching from gear 2 to 3. The noise is similar to electric contactor switch that is not working. Also:
- the shifting from gear 2 to 3 is not fluid - most of the times, there is the clicking noise. At other times, the gearbox successfully shifts into 3rd gear.
- the engine seems to lose power at the time when the gearbox is trying to shift into 3rd gear, slowing the car down.
- shifting gears from 1 to 2 and 4 to 5 work just fine, no noise

I have had the car diagnosed with software DAS Xentry which suggests there is a fault with FGS, citing Y3/7n2, Y3/7n3 modules fault codes from #2000 through 2009. Other codes were 200B. I have had the Y3/7n2 and 7n3 parts replaced, but the noise persists.
What could this be and where should I look? I am clueless.

Many thanks for your wisdom,

Adam
holymans is offline  
Sponsored Links
Advertisement
 
Reply

  Mercedes-Benz Forum > Mercedes-Benz Sedan Forums > W168 A-Class

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)
     
    User Tag List

    Thread Tools
    Show Printable Version Show Printable Version
    Email this Page Email this Page
    Display Modes
    Linear Mode Linear Mode



    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