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 > Tech Help

Reply
 
LinkBack Thread Tools Display Modes
  #1  
Old 06-25-2007, 06:05 AM
Silver C 240 2K model
 
Join Date: Jun 2007
Location: London United Kingdom
Posts: 13
sharp slapping sound !

Hi all

Thank you for allowing me on this forum
I live in the UK and own a 2001 C class 240.

There is a sharp knocking /slapping sound that has developed whilst the car is under heavy braking. This seems to come from around the drivers side engine area but I maybe wrong.

I have checked the wheels and tryes all seems fine, there are no loose bits hanging in the engine bay.

A local non mercedes garage tested it and says its the ABS mechanism failed.
The car brakes fine.
The sound is intermittent.
This weekend though after a three days of heavy rainfall, the BAS brake assist light has now come on and I am worried this is something big!!!

Any ideas on what this could be?

Thanks you in advance

Worried C class driver!


Last edited by manna90; 06-25-2007 at 09:15 AM.
Reply With Quote
  #2  
Old 06-28-2007, 06:31 AM
Silver C 240 2K model
 
Join Date: Jun 2007
Location: London United Kingdom
Posts: 13
?????????? Nobody has any idea????
Reply With Quote
  #3  
Old 06-28-2007, 09:12 AM
Moderator
 
Join Date: Mar 1999
Location: Tucker, Ga USA
Posts: 12,153
Having the TRACTION system scanned for codes would be a starting point.

If you post those codes we could help with diagnosis.

Have the front lower control arm bushings check for wear as well.
__________________
MERCEDES Benz Master Guild Technician (6 TIMES)
ASE Master Technician
Mercedes Benz Star Technician (2 times)
44 years foreign automotive repair
27 Years M.B. Shop foreman (dealer)
MB technical information Specialist (15 years)
190E 2.3 16V ITS SCCA race car (sold)
1986 190E 2.3 16V 2.5 (sold)
Retired Moderator
Reply With Quote
  #4  
Old 06-28-2007, 09:20 AM
Silver C 240 2K model
 
Join Date: Jun 2007
Location: London United Kingdom
Posts: 13
Hi thank you very much for your advice, much appreciated.
I shall have these checked and update you.
Reply With Quote
  #5  
Old 07-05-2007, 09:55 AM
Silver C 240 2K model
 
Join Date: Jun 2007
Location: London United Kingdom
Posts: 13
Ohhhhh my God!

Hi all

The BAS issue turned out to be due to a faulty switch only 15 plus fitting at 20. However all my suspension bushes are apparently worn out and I have a broken rear spring brought on by ...wait for it... me having fitted 255/35/18 lorinser alloy wheels and tyres at the back and 225/40/18 at the front. The garage said the C240 wasnt designed to handle such large wheels!!!Is that true?
He asked if I was sitting down before he would tell me how much to fix all this.....1124.

I am gutted!
Reply With Quote
  #6  
Old 07-05-2007, 11:00 AM
MattBelliveau's Avatar
Gotta another one...
 
Join Date: Jun 2005
Location: NE Ohio
Posts: 1,685
A rubber rebuild on a 6 year old car? Sheesh
__________________
1989 300E 144K
Reply With Quote
  #7  
Old 07-05-2007, 11:02 AM
david s poole
 
Join Date: Mar 2005
Location: dallas
Posts: 1,822
i find it amazing that the sellers of these large diameter wheels are allowed to sell them based only on whether they will fit without rubbing the fender.rule of thumb with mercedes is only one inch larger than stock.in germany the tuf requires that the title of the car be endorsed with non factory wheel type and specification but only if on the approved list.
__________________
David S Poole
European Performance
Dallas, TX
4696880422

"Fortune favors the prepared mind"
1987 Mercedes Benz 420SEL
1988 Mercedes Benz 300TE (With new evaporator)
2000 Mercedes Benz C280
http://www.w108.org/gallery/albums/A...1159.thumb.jpg
Reply With Quote
  #8  
Old 07-06-2007, 05:27 AM
Silver C 240 2K model
 
Join Date: Jun 2007
Location: London United Kingdom
Posts: 13
"A rubber rebuild on a 6 year old car? Sheesh "

Errmm does that mean its really bad or does it mean its not worth it?
Reply With Quote
  #9  
Old 07-06-2007, 09:41 AM
Silver C 240 2K model
 
Join Date: Jun 2007
Location: London United Kingdom
Posts: 13
Angry

I dont know what to say or think at the moment because whilst I was having my rear tyres swapped for new ones, I asked the tyre guy to check the rear springs (since the other garage had told me that i had a broken spring) and he could not see any damaged springs. I went under with him and using a bright torch, we inspected both rear springs - they are as good as new.
Now in the UK, we do have a legally required vehicle check called an MOT and the other garage actually failed me on 2 rear below legal limit tyres plus a rear broken spring!
I want to visit a main dealer now and get them checked then haul his ass to court if they are found to be ok.
Am back to square one - still have the slapping sound and a lighter wallet!

Watch this space
Reply With Quote
  #10  
Old 07-07-2007, 08:42 AM
Silver C 240 2K model
 
Join Date: Jun 2007
Location: London United Kingdom
Posts: 13
After visiting two independent garages, they cannot find anything wrong with my suspension springs! I am calling law enforcement first thing monday morning.

Reply With Quote
  #11  
Old 07-07-2007, 03:06 PM
Registered User
 
Join Date: Sep 2004
Location: Seattle
Posts: 1,932
I seem to recall another thread with a complaint of a similar noise on hard braking. In that case it was worn engine/trans mounts that allowed the engine to shift forward and the fan was hitting something. Anyway, you might inspect the fan area WITH THE ENGINE OFF!! and see if there is any evidence of rubbing. And if I am right then you must send me beer.

Mike
__________________
1998 C230 330,000 miles (currently dead of second failed EIS, yours will fail too, turning you into the dealer's personal human cash machine)
1988 F150 144,000 miles (leaks all the colors of the rainbow)
Previous stars: 1981 Brava 210,000 miles, 1978 128 150,000 miles, 1977 B200 Van 175,000 miles, 1972 Vega (great, if rusty, car), 1972 Celica, 1986.5 Supra
Reply With Quote
  #12  
Old 07-09-2007, 10:33 AM
Silver C 240 2K model
 
Join Date: Jun 2007
Location: London United Kingdom
Posts: 13
LOL will do IF you are right!
Reply With Quote
  #13  
Old 07-14-2007, 01:39 AM
Registered User
 
Join Date: Sep 2004
Location: Seattle
Posts: 1,932
Wellllllllll...?

__________________
1998 C230 330,000 miles (currently dead of second failed EIS, yours will fail too, turning you into the dealer's personal human cash machine)
1988 F150 144,000 miles (leaks all the colors of the rainbow)
Previous stars: 1981 Brava 210,000 miles, 1978 128 150,000 miles, 1977 B200 Van 175,000 miles, 1972 Vega (great, if rusty, car), 1972 Celica, 1986.5 Supra
Reply With Quote
Reply

Bookmarks

Thread Tools
Display Modes

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




All times are GMT -4. The time now is 12:27 PM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2019, vBulletin Solutions, Inc.
Search Engine Optimization by vBSEO 3.6.0
Copyright 2018 Pelican Parts, LLC - Posts may be archived for display on the Peach Parts or Pelican Parts Website -    DMCA Registered Agent Contact Page