RS4 (B7 Platform) Discussion Discussion forum for the B7 Audi RS4

Clunk coming from front struts - DRC?

Old 11-21-2007, 07:06 AM
  #1  
Audiworld Junior Member
Thread Starter
 
Mark RS4's Avatar
 
Join Date: Jan 2007
Posts: 82
Likes: 0
Received 0 Likes on 0 Posts
Default Clunk coming from front struts - DRC?

When I first drive the car I hear a clunking sound from either of the front struts when I hit any road imperfections like cracks, small potholes, manhole covers, etc. It only seems to happen during the first 10 minutes or so of driving. Once the car is warmed up, everything seems normal. I live in Boston, so obviously avoiding bumps is not an option. I also try not to drive aggressively over any bumps, so that's not the problem. The car has 6,800 miles on it and I bought it new, so I know the history of the car. It makes a sound like the shock has run out of travel and is hitting the end stop. That wouldn't explain why it only happens before the car is warmed up though.

Any thoughts?
Old 11-21-2007, 08:11 AM
  #2  
AudiWorld Super User
 
RI A6's Avatar
 
Join Date: Apr 2005
Posts: 3,198
Likes: 0
Received 1 Like on 1 Post
Default Re: Clunk coming from front struts - DRC?

could be strut. Could be loose subframe bolts, which I had happen.
Old 11-21-2007, 08:14 AM
  #3  
AudiWorld Super User
 
Fluffhead's Avatar
 
Join Date: Oct 2001
Location: Long Island, NY
Posts: 7,582
Likes: 0
Received 0 Likes on 0 Posts
Default Sounds like the DRC to me (more)...

If it is the DRC it will get worse over time.

It seems the cold weather brings the problem out. I'm having a similar issue and someone else I've been in contact with is as well.

It seems the solution is to completely drain the DRC system and recharge. They might need to replace the central valve as well.

The noise can also be caused by a shock that is leaking and in that case the shock needs to be replaced and the system recharged.

I would bring it to the dealer ASAP.
Old 11-21-2007, 08:39 AM
  #4  
AudiWorld Member
 
RSIV's Avatar
 
Join Date: Jun 2006
Posts: 460
Likes: 0
Received 0 Likes on 0 Posts
Default

Could it be the brakes? That would explain why it eventually stops...
Old 11-21-2007, 08:51 AM
  #5  
Senior Member
 
daveak05's Avatar
 
Join Date: Dec 2005
Posts: 8,364
Likes: 0
Received 0 Likes on 0 Posts
Default Loose subframe bolts??/

did that just happen by itself or was it after you had some work done? the former would be pretty lame.
Old 11-21-2007, 08:54 AM
  #6  
Senior Member
 
daveak05's Avatar
 
Join Date: Dec 2005
Posts: 8,364
Likes: 0
Received 0 Likes on 0 Posts
Default A4/S4 notorious for the brake sound, so RSIV could be right

and it almost sounds like shock compression too, but more metal sounding. best thing is to take it in to dealer and have them check it out.
Old 11-21-2007, 09:30 AM
  #7  
AudiWorld Super User
 
RI A6's Avatar
 
Join Date: Apr 2005
Posts: 3,198
Likes: 0
Received 1 Like on 1 Post
Default Not clear. It could have been after transmision was dropped for clutch hose.

Not a big issue, but it caused an annoying clunk, which I thought was the brakes, since I'd recently had Ferodo pads installed and I was braking much harder.
Old 11-21-2007, 09:31 AM
  #8  
Senior Member
 
daveak05's Avatar
 
Join Date: Dec 2005
Posts: 8,364
Likes: 0
Received 0 Likes on 0 Posts
Default

ah, that would make sense
Old 11-21-2007, 11:29 AM
  #9  
Audiworld Junior Member
Thread Starter
 
Mark RS4's Avatar
 
Join Date: Jan 2007
Posts: 82
Likes: 0
Received 0 Likes on 0 Posts
Default Thanks for the feedback. I'm pretty certain it's the suspension, so off to the

dealer for a check-up. It seems to be getting worse over time
Old 11-21-2007, 02:09 PM
  #10  
AudiWorld Member
 
cit1991's Avatar
 
Join Date: May 2007
Posts: 364
Likes: 0
Received 0 Likes on 0 Posts
Default Check all parts (bolts) on the front anti-roll bar and end links.

I've had this be the cause of wierd clunks on other cars.

Thread Tools
Search this Thread
Quick Reply: Clunk coming from front struts - DRC?



All times are GMT -8. The time now is 09:49 AM.