Front end rubber cruching noise over bumps - MBWorld.org Forums

Go Back  MBWorld.org Forums > Mercedes-Benz Sedans > C-Class (W203)
Front end rubber cruching noise over bumps > Front end rubber cruching noise over bumps
Notices
C-Class (W203) 2001-2007, C160, C180, C200, C220, C230, C240, C270, C280, C300, C320, C230K, C350, Coupe

Front end rubber cruching noise over bumps

Reply

 
 
Old 05-18-2008, 03:21 PM
  #1
Almost a Member!
Thread Starter
 
Join Date: Feb 2008
Location: Chicago IL
Posts: 49
Thanks: 0
Thanked 0 Times in 0 Posts
02 C240 Black
Front end rubber cruching noise over bumps

As the title states I've been getting this "rubber cruching" noise while driving slowly over bumpy or uneven road surfaces. I raised my car on a lift and everything feels tight. I have zero play in all the balljoints. My thrust arm bushings are dry (no fluid leaking out of them or tears). So I am thinking it might be the strut mounts or struts any ideas?

Thanks
mbhackie is offline  
Reply With Quote
Old 05-18-2008, 06:46 PM
  #2
Newbie
 
Join Date: Dec 2007
Posts: 13
Thanks: 0
Thanked 0 Times in 0 Posts
2002 C230K
I know you checked --- but sounds like bushings to me.
saetneta is offline  
Reply With Quote
Old 05-18-2008, 06:56 PM
  #3
Senior Member
 
JLD2k3's Avatar
 
Join Date: May 2006
Location: VA
Posts: 268
Thanks: 0
Thanked 0 Times in 0 Posts
2002 C320
Originally Posted by saetneta View Post
I know you checked --- but sounds like bushings to me.
That's what I thought, too. Get a set of metric sockets/wrenches and make sure the endlinks are supertight.
JLD2k3 is offline  
Reply With Quote
Old 05-18-2008, 10:11 PM
  #4
JE8
Newbie
 
Join Date: May 2008
Posts: 12
Thanks: 0
Thanked 0 Times in 0 Posts
C240
C240 front end noise

My C240 has a squeak in front end when going over bumps.....some days its worse than others....is it bushings?? How much $ to repair?

Thx
JE8 is offline  
Reply With Quote
Old 05-18-2008, 10:29 PM
  #5
Senior Member
 
JLD2k3's Avatar
 
Join Date: May 2006
Location: VA
Posts: 268
Thanks: 0
Thanked 0 Times in 0 Posts
2002 C320
Originally Posted by JE8 View Post
My C240 has a squeak in front end when going over bumps.....some days its worse than others....is it bushings?? How much $ to repair?

Thx
Front sway bar bushings are around $80/side. If you can do it yourself, $30. Takes 10 minutes once you get the car up/side.

Check to make sure they're tight first before you take it to the dealer.
JLD2k3 is offline  
Reply With Quote
Old 05-18-2008, 10:49 PM
  #6
JE8
Newbie
 
Join Date: May 2008
Posts: 12
Thanks: 0
Thanked 0 Times in 0 Posts
C240
Are they visible from under car on floor jack? What should I be looking for? Sorry for the dumb questions
JE8 is offline  
Reply With Quote
Old 05-18-2008, 11:10 PM
  #7
Senior Member
 
JLD2k3's Avatar
 
Join Date: May 2006
Location: VA
Posts: 268
Thanks: 0
Thanked 0 Times in 0 Posts
2002 C320
Originally Posted by JE8 View Post
Are they visible from under car on floor jack? What should I be looking for? Sorry for the dumb questions
Not dumb questions, 2 months ago I didn't know any of this stuff either. I'm no expert, but this forum can help you save a lot of trouble and money at the shop.

Check out InstallUniversity.com for the front sway bar install step by step. The endlinks are where the sway bar meets the tie rod, and there is a bushing that pads that link. If that nut/bolt is loose you will get a clunking sound going over bumps and especially when you shift the weight from one side to the other.

Also, don't get under the car with just a floor jack. Use ramps or jack stands. This is for your safety. It will be easier to deal with the sway bars using ramps.
JLD2k3 is offline  
Reply With Quote
Old 05-18-2008, 11:13 PM
  #8
JE8
Newbie
 
Join Date: May 2008
Posts: 12
Thanks: 0
Thanked 0 Times in 0 Posts
C240
THANK YOU !!!!!
JE8 is offline  
Reply With Quote
Old 05-18-2008, 11:44 PM
  #9
Senior Member
 
JLD2k3's Avatar
 
Join Date: May 2006
Location: VA
Posts: 268
Thanks: 0
Thanked 0 Times in 0 Posts
2002 C320
Originally Posted by JE8 View Post
THANK YOU !!!!!
Post your findings after you check it out. Also, grab a hold of the tie rod and shake the ***** out of it. Do that before and after you tighten (if you need to tighten). If it moves around and feels like popping a knuckle, try to tighten the nut, if after tightening it still does it, you need a new bushing.

If it was loose and tightening it fixes it, get some Loctite Blue threadlock ($3 at Lowe's) and put that on there. Tighten the ***** out of it and let the threadlock sit for a half hour or so. The MB spec is 18 footpounds, but I learned it's better to crank it.

Sorry for the multiple posts, I just figured if you're anything like me you'll prefer to knock it out in one shot if possible.
JLD2k3 is offline  
Reply With Quote
Old 05-18-2008, 11:54 PM
  #10
JE8
Newbie
 
Join Date: May 2008
Posts: 12
Thanks: 0
Thanked 0 Times in 0 Posts
C240
excellent info

just read this....

http://www.installuniversity.com/mb/...frontsway.html

I 'll give it a try tomorrow

Thx again
JE8 is offline  
Reply With Quote
Old 05-20-2008, 06:55 PM
  #11
Almost a Member!
Thread Starter
 
Join Date: Feb 2008
Location: Chicago IL
Posts: 49
Thanks: 0
Thanked 0 Times in 0 Posts
02 C240 Black
Thanks for all the replies guys.

Question... when you say...

I know you checked --- but sounds like bushings to me.
Are you suggesting the sway bar bushings that everyone is talking about or my thrust arm hydro bushings?
mbhackie is offline  
Reply With Quote
Old 05-20-2008, 07:31 PM
  #12
JE8
Newbie
 
Join Date: May 2008
Posts: 12
Thanks: 0
Thanked 0 Times in 0 Posts
C240
front end squeak

I just greased the sway bar bushings today...helped alot ...although not 100% fixed.....I guess next step is to replace them????

Rookie question......What the heck is a Thrust Arm Hydro Bushing????
JE8 is offline  
Reply With Quote
Old 05-20-2008, 08:07 PM
  #13
MBWorld Fanatic!
 
Mu9enx's Avatar
 
Join Date: Aug 2007
Location: Sacramento/San Gabriel/Riverside
Posts: 3,560
Thanks: 0
Thanked 1 Time in 1 Post
01' C32o
man i need some sways.. car is starting to sound like jordan's musical brakes, lol.
Mu9enx is offline  
Reply With Quote
Old 05-20-2008, 10:45 PM
  #14
Almost a Member!
Thread Starter
 
Join Date: Feb 2008
Location: Chicago IL
Posts: 49
Thanks: 0
Thanked 0 Times in 0 Posts
02 C240 Black
Rookie question......What the heck is a Thrust Arm Hydro Bushing
The thrust/control arms use fluid filled pressed in bushings. Check this out...

https://mbworld.org/forums/showthrea...grease+bushing
mbhackie is offline  
Reply With Quote
Old 03-08-2009, 02:18 PM
  #15
MBWorld Fanatic!
 
Join Date: Jun 2003
Location: nj
Posts: 4,705
Thanks: 0
Thanked 0 Times in 0 Posts
a car that can't do the throttle reset.
Hey guys, old thread but the topic I am curious about. Does the failure of the bushings sound like a rubbing... almost like when you rub a wheel on the fender?

And is this an issue that can create further problems? Thanks.
pointman is offline  
Reply With Quote
Old 03-08-2009, 05:27 PM
  #16
Super Moderator
 
Glyn M Ruck's Avatar
 
Join Date: Jun 2008
Location: Llandudno, Cape Town, South Africa
Posts: 19,843
Thanked 54 Times in 47 Posts
late 2009 CLK 350 Coupe Elegance, '65 Jaguar S Type wires
Glyn M Ruck is offline  
Reply With Quote
Old 03-09-2009, 03:15 PM
  #17
MBWorld Fanatic!
 
Join Date: Jun 2003
Location: nj
Posts: 4,705
Thanks: 0
Thanked 0 Times in 0 Posts
a car that can't do the throttle reset.
Nice. Thanks for the good info. Gonna check it out. I hope you are right. The noise has me worried.
pointman is offline  
Reply With Quote
Old 03-27-2009, 10:52 PM
  #18
Senior Member
 
danev6972's Avatar
 
Join Date: Sep 2006
Location: FLORIDA
Posts: 296
Thanks: 0
Thanked 0 Times in 0 Posts
2003 C240
Call me ignorant but as I was shopping online for bushings I saw
"rear outer control arm bushing, Lower control arm bushing" and that got me confused!
http://www.car-stuff.com/store/?N=11...668+11921+9198

How many do I need to replace all front & rear?
Is this correct....?

FRONT : 1 left Low arm & 1 right Low arm =2
REAR: 1 left Low arm & 1 right Low arm =2
Total of 4 LC arm bushing
OR
FRONT: 2 left / 2 right = 4

REAR: 1 outer arm Left side & 1 outer arm right
Total of 2 Out arm bushing

DOes the FRONT have an outer arm bushing too?

Does the REAR have a lower arm bushing?

I am so ignorant about suspension...SORRY.

Last edited by danev6972; 03-27-2009 at 11:01 PM.
danev6972 is offline  
Reply With Quote
Old 08-22-2009, 03:54 AM
  #19
Junior Member
 
Join Date: Jun 2007
Posts: 36
Thanks: 0
Thanked 0 Times in 0 Posts
2003 C320 4matic sport
sorry to drag up an old thread but after reading through old topics for an hour, I think i confused myself more.

I'm having the same issues as the OP, am i suppose to e getting sway bar bushings, thrust arm bushings, control arms bushings, or something else? What about for the rear? How much am I looking at?
swiftbmx is offline  
Reply With Quote
Old 08-22-2009, 04:54 AM
  #20
Super Moderator
 
Glyn M Ruck's Avatar
 
Join Date: Jun 2008
Location: Llandudno, Cape Town, South Africa
Posts: 19,843
Thanked 54 Times in 47 Posts
late 2009 CLK 350 Coupe Elegance, '65 Jaguar S Type wires
OK - suspect number one is the castor bushes (also known as thrust arm bushes or control arm bushes). They crack & leak & I have posted the factory bulletin multiple times.

Suspect number two are sway bushes and links. All are cheap. Castor bushes are under $20 each.

See pic - no 18 is castor bush. sway bushes & links are obvious.

Glyn M Ruck is offline  
Reply With Quote
Old 09-22-2009, 11:03 PM
  #21
Senior Member
 
holycaoAMG's Avatar
 
Join Date: Jul 2008
Location: Nor Cal
Posts: 420
Thanks: 0
Thanked 0 Times in 0 Posts
A Car
Quick Question

I read the posts above but cant seem to fine a solid answer.
I have this knocking and clunk sound in the front end suspension. On normal, uneven roads, theres a knocking sound that feels like my front end is lose and going over speed bumps, theres a clunk sound.

Already had my strut bushings replaced, so no more squeking sound, and had the sway bar bearing lubricated, all noise was gone, but after 10k miles later, the clunk/knocking is now audiable. Im thinking its the sway bar bushings, but my mechanic guesses its the sway bar links.

Can someone tell me exactly what needs to be replaced?
Both sway bar bushings/links all together?

Thanks,
holycaoAMG is offline  
Reply With Quote
Old 09-23-2009, 01:39 AM
  #22
MBWorld Fanatic!
 
Join Date: Jul 2008
Posts: 6,742
Thanked 27 Times in 25 Posts
2014 C350 Sport Sedan & 2015 Kia Optima Hybrid EX
Originally Posted by Glyn M Ruck View Post
OK - suspect number one is the castor bushes (also known as thrust arm bushes or control arm bushes). They crack & leak & I have posted the factory bulletin multiple times.

Suspect number two are sway bushes and links. All are cheap. Castor bushes are under $20 each.

See pic - no 18 is castor bush. sway bushes & links are obvious.

.
LILBENZ230 is offline  
Reply With Quote
Old 09-23-2009, 09:40 AM
  #23
Super Moderator
 
Glyn M Ruck's Avatar
 
Join Date: Jun 2008
Location: Llandudno, Cape Town, South Africa
Posts: 19,843
Thanked 54 Times in 47 Posts
late 2009 CLK 350 Coupe Elegance, '65 Jaguar S Type wires
Yep!
Glyn M Ruck is offline  
Reply With Quote
Old 09-23-2009, 10:48 AM
  #24
Super Moderator
 
johnand's Avatar
 
Join Date: Dec 2006
Location: Camas, WA
Posts: 2,338
Thanks: 0
Thanked 11 Times in 4 Posts
2007 C230SS
Originally Posted by holycaoAMG View Post
I read the posts above but cant seem to fine a solid answer.
I have this knocking and clunk sound in the front end suspension. On normal, uneven roads, theres a knocking sound that feels like my front end is lose and going over speed bumps, theres a clunk sound.

Already had my strut bushings replaced, so no more squeking sound, and had the sway bar bearing lubricated, all noise was gone, but after 10k miles later, the clunk/knocking is now audiable. Im thinking its the sway bar bushings, but my mechanic guesses its the sway bar links.

Can someone tell me exactly what needs to be replaced?
Both sway bar bushings/links all together?

Thanks,
Sounds like swaybar endlinks. Try those 1st.
johnand is offline  
Reply With Quote
Old 09-23-2009, 09:16 PM
  #25
Senior Member
 
holycaoAMG's Avatar
 
Join Date: Jul 2008
Location: Nor Cal
Posts: 420
Thanks: 0
Thanked 0 Times in 0 Posts
A Car
Thing is my mechanic wants to charge me $70 just to diagnose the problem, i said no, as i know the problem is either links or bushings. I want to get the entire problem fix the first time and not have to keep bringing it back cause he will keep charging me everytime i come see him. Im doing some major maintainence on the car right now, and every penny i can save is worth everything right now.

Thats why i want to nail down exactly what the problem is.

I might as well do both links and bushings, but i wanted to clearify if i only need links.
holycaoAMG is offline  
Reply With Quote
 
 
 

Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
Pcastroxo
C-Class Coupe (C204)
11
04-18-2017 10:53 PM
jaworks3d
E-Class (W212)
18
09-11-2015 12:49 AM
El Cid
E-Class (W212)
7
09-08-2015 05:27 AM
ELLAV8
S-Class (W220)
3
09-06-2015 04:09 PM
AMG893
C63 AMG (W204)
3
09-03-2015 07:56 PM



Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools
Search this Thread
Rate This Thread
Rate This Thread:
You have already rated this thread Rating: Thread Rating: 0 votes,  average.

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 Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off



All times are GMT -4. The time now is 09:49 AM.


Copyright 2001-2012 InternetBrands, Inc. / MBWorld.org. All Rights Reserved. We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.
 
  • Ask a Question
    Get answers from community experts
Question Title:
Description:
Your question will be posted in: