thumping noise on 2006 CLS 55
#1
Junior Member
Thread Starter
Join Date: Jan 2011
Location: Riverview, Fl.
Posts: 61
Likes: 0
Received 3 Likes
on
2 Posts
2006 IWC Ingenieur CLS 55 AMG
thumping noise on 2006 CLS 55
This weird thumping noise started coming from rear of car recently. Speeds up as car speeds up. Shop said not trie or wheel.Seems to be rear end or axle? Strange thing is it does it when car is cold and at low speeds. Don't really hear it after driving a while. I have Quaife LSD that was installed like 8 months ago. car runs great has about 35,000 miles. It is putting out around 650 HP at crank. Any ideas or anyone experienced this and know what it is? Shop that installed LSD is looking at it nut no diagnosis yet.
#3
Junior Member
Thread Starter
Join Date: Jan 2011
Location: Riverview, Fl.
Posts: 61
Likes: 0
Received 3 Likes
on
2 Posts
2006 IWC Ingenieur CLS 55 AMG
Called Quaiif and they said not the diff if it does it going straight as nothing is moving in It except when cornering. It's really strange it does it when cold going straight. You can also make it do it when warned up but only if load one side by turning. Shop going to pull axle and start looking around. Not sure what else to do.
#4
check your driveshaft support bearing. Mine is going out and will make a clicking/thumping noise only at low speeds. Parts cost about 130 but you have to drop the whole driveshaft to fix though, so if you arent mechnically inclined it could cost you in labor.
Check for cracking or rips in the rubber surround, that will give you a good idea.
Check for cracking or rips in the rubber surround, that will give you a good idea.
#6
Senior Member
If you can make it happen by cornering and the sound is consistent even when straight I'd look to the diff installation. It's not whining which would rule out improper clearance between ring and pinion but the bumps indicate something rough rubbing consistently.
#7
Junior Member
Thread Starter
Join Date: Jan 2011
Location: Riverview, Fl.
Posts: 61
Likes: 0
Received 3 Likes
on
2 Posts
2006 IWC Ingenieur CLS 55 AMG
It appears it is the diff according to the tech he says he's sure. He said he can make it do it consistently by applying brake when on lift to load one side or by cornering slow. Does it going straight only when cold.
They changed fluid and it was dark and silver metallic when stirred. Was Redline 75/140 since installed.
I would not recommend Quaife at all. Very hard to reach on phone. Warranty only applies to original owner so putting stock one back on so can send this off to get fixed. Cost me lot of time and money and good luck even getting them on phone!
They changed fluid and it was dark and silver metallic when stirred. Was Redline 75/140 since installed.
I would not recommend Quaife at all. Very hard to reach on phone. Warranty only applies to original owner so putting stock one back on so can send this off to get fixed. Cost me lot of time and money and good luck even getting them on phone!
Trending Topics
#9
Junior Member
Thread Starter
Join Date: Jan 2011
Location: Riverview, Fl.
Posts: 61
Likes: 0
Received 3 Likes
on
2 Posts
2006 IWC Ingenieur CLS 55 AMG
Will know soon enough because Quaife will inspect thoroughly and determine what caused failure and if they will warranty.
#10
Senior Member
Yikes! This makes me reconsider whether or not I want to install a Quaife in my car now. Hope it all works out for the best.
#11
Junior Member
Thread Starter
Join Date: Jan 2011
Location: Riverview, Fl.
Posts: 61
Likes: 0
Received 3 Likes
on
2 Posts
2006 IWC Ingenieur CLS 55 AMG
Sent it back to Quaife. They will have today so I will follow up shortly. The ring and pinion looked ok so don't see how this can be install related.
The Wavetrac is the one I should have got and their lifetime warranty is transferable unlike Quaifes original owner only policy.
The Wavetrac is the one I should have got and their lifetime warranty is transferable unlike Quaifes original owner only policy.
#13
Junior Member
Thread Starter
Join Date: Jan 2011
Location: Riverview, Fl.
Posts: 61
Likes: 0
Received 3 Likes
on
2 Posts
2006 IWC Ingenieur CLS 55 AMG
I believe you have to set backlash any time you replace your diff and line the gears up?
I had reputable shop do mine. Don't have the tools or know how to set backlash properly.
I had reputable shop do mine. Don't have the tools or know how to set backlash properly.