Rear Suspension Help - Mercedes-Benz Forum

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post #1 of 15 (permalink) Old 06-17-2017, 10:51 AM Thread Starter
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Rear Suspension Help

Hello all. Strange feeling started on the driver side rear of 2002 SL500. Most dramatic is a slight shimmy that moves the rear of the car from the driver side towards the passenger side when I lift off the accelerator. I am also getting a noise that sounds like finger-flicking a plastic solo cup on some bumps when I drive over an imperfection under the driver side rear tire.

I recently changed the 4 rear control arms on each side (maybe 1000 miles ago) and this started out of nowhere today. I drove about 50 miles didn't notice anything, then on the way home I felt the rear feeling squirrelly. I put the car on the lift (scissor - so suspension hanging) and pulled and shook all the rear suspension parts (and transmission mount) and nothing seems out of sorts - though it looks like my rear sway bar bushings have seen better days.

Any and all help appreciated.
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post #2 of 15 (permalink) Old 06-17-2017, 11:01 AM Thread Starter
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I'm doing some searching - could this be flex discs?
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post #3 of 15 (permalink) Old 06-17-2017, 12:24 PM
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It would not be the flex disks. My first thought is the multi links when you say "4 control arms" Are you referring to the multi links ?

As far as I know there's only one control arm per wheel


I'll betthere is a loose one (link) in there now
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post #4 of 15 (permalink) Old 06-17-2017, 01:09 PM
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I had the same feeling when letting off the gas pedal. See this thread: http://www.benzworld.org/forums/r129...ging-tail.html

I changed both the lower control arm bushings, the 4 links in the multi link suspension and sway bar links. The car drives "like new" now.

Stay flexible - keep smiling
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post #5 of 15 (permalink) Old 06-17-2017, 01:24 PM Thread Starter
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yes - I changed the multi-links
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post #6 of 15 (permalink) Old 06-17-2017, 05:15 PM
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It could be your rear subframe mounts. See this link

http://www.benzworld.org/forums/r129-sl-class/2785018-rear-suspension-clunk-creak-2.html
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post #7 of 15 (permalink) Old 06-17-2017, 06:28 PM
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It's most likely the lower spring bushings that forms the attachment point for the spring link to the carrier hub.

Did you press the old ones out and put in new ones when you rebuild your rear end?

These things wear out all the time.
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post #8 of 15 (permalink) Old 06-17-2017, 08:55 PM Thread Starter
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Thank you all for replies. I will change out all the remaining rear suspension patrts. Does anyone one have an explanation of the actiual cause of this behavior? Like 'the 'x' bushing is worn so there is play in the 'x'and when you lift off the throttle, the torque pushes 'x' to 'x' and the rear shifts...
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post #9 of 15 (permalink) Old 06-17-2017, 11:13 PM
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I trust you loaded the suspension up before tightening all the link bolts when you last worked on the suspension.

How many miles on the car?

The front link with the ball joint is called the torque link and if this is faulty then you will get the condition that you indicate in your post. What make are the the new links?

Last edited by rorypff; 06-17-2017 at 11:18 PM.
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post #10 of 15 (permalink) Old 06-18-2017, 05:00 AM Thread Starter
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Yes, the suspension was loaded when the links were installed. The car has 117k and the work was done at least 1000 miles ago and had seemed fine until yesterday. I believe it was the Meyle kit I installed.
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