Automatic transmission clicking noise - Mercedes-Benz Forum
 
LinkBack Thread Tools Display Modes
#1 (permalink) Old 05-22-2013, 07:46 PM
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:
If you do not want to register, fill this field only and the name will be used as user name for your post.
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:

Log-in

Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.




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