Slight vibration when backing up?
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2006 E55 AMG
Slight vibration when backing up?
Hey Guys,
For the past month or so I've been feeling a slight vibration when backing up. I never feel it going forward only in reverse with the brake fully disengaged
. I'm thinking it might be my brakes but not sure, any thoughts?
For the past month or so I've been feeling a slight vibration when backing up. I never feel it going forward only in reverse with the brake fully disengaged
. I'm thinking it might be my brakes but not sure, any thoughts?
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From: Chicago, IL
Real Cars
Sounds like a diff issue to me Alan, hard to say though. Where do you feel the vibration? In your steering wheel in in your seat? Does it happen all the time? Are you going straight or at an angle? Do you have an aftermarket LSD?
-m
-m
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2015 S212
I still think diff. If not, your subframe may be shifting? Take it to MB and please report back. Added power has to bring strain.
Out Of Control!!
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From: San Diego
2015 S212
2 piece rotors? Check the hardware. See how much play there is. There should be some, since they are floating but not too much. Worst case, $400 for new hardware and you are off again.
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Thread Starter
MBWorld Fanatic!
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2006 E55 AMG
Jangy, If it's brake related would that effect the braking itself. I've notice that I need to apply a little more brake recently and maybe that's the case.
Out Of Control!!
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From: San Diego
2015 S212
Out Of Control!!
Joined: Sep 2004
Posts: 13,394
Likes: 6
From: San Diego
2015 S212
The same thing happened to my rotors and I am finding out that that is typical given the way i drive. Most of my friends with 2 piece rotors that happen to drag race, etc. end up replacing the hardware quite often.
Even if that is not the issue, you should do a routine check on them as it is very hard to notice unless the car is on a lift.
Just to add to it. If they are as loose as mine were, you should be able to hear a clicking noise when moving very slowly (foot off brake, obviously) as the weight shifts. Try rolling SLOWLY next to a building and see if it has a click. That would be the rotor moving within its floating zone. The more clicking the more float.
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2006 E55 AMG
Thanks everyone. My car will be going in and a few people also believe it could be the tranny mounts.... We'll see.
Thanks again for all the input and I'll update once I find out.
Thanks again for all the input and I'll update once I find out.
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E63 P30, CL500 Sport
It's a slight possibility, but it could also be the rear sub frame mounts.... although that would cause vibration while going backward and forward not just in one direction. The differential seems like a more plausible cause.
Out Of Control!!
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2015 S212
I'm just messing with you and yes, the vibration of the pump building pressure is true but it has nothing to do with reverse. Could it be that you guys start it and jump into reverse?
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From: Chicago, IL
Real Cars
It could very well be a mount, although I'd be surprised if it was a motor mount that you only felt it in reverse, although it could happen.
SBC sounds like a possible culprit as well, although I've never seen that personally.
-m
SBC sounds like a possible culprit as well, although I've never seen that personally.
-m
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2015 S212
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CLS55 AMG
What is the frequency of the vibration?...as in, is it speed related or a constant buzz?...and is it always cold start, as in backing out of garage...or anytime in reverse, even after being warmed up?
Does it "crab" side to side...as in, a rocking motion?
Do you think you're comfortable with having a proper alignment...as in, do you have some sort of abnormal tire wear or handling concerns? (perhaps a one-off specialty alignment)
How's the diff sound in turning <right/left> tight circles within...say an asphalt parking lot?
Just trying to understand the odd quirks of these beasts and perhaps some <possible>value added info, if I can. 
Thread Starter
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2006 E55 AMG
Thread Starter
MBWorld Fanatic!
Joined: May 2008
Posts: 3,077
Likes: 2
2006 E55 AMG
It seems that the transmission mounts were worn and needed to be replaced but he couldn't duplicate the problem because of it being intermittent. Engine mounts were fine with no leaking and all else is well. All in all I feel better and can't wait to pick my car up tomorrow.
