[W126 Coupe] Wheel Shimmy Driving Me Crazy!

[mavris2 at comcast.net]

You might look into this http://www.craigautometrics.com/huntergsp9700.htm
Its amazing what this machine can do.
I only know of one place that has such a machine, discount tire.  Had the 
same problem.  I had them do this to all 4 tires and problem solved.   I 
think they charged like 20 bucks a wheel.  Kind of stout, but it took care 
of the problem.

Jason

----- Original Message ----- 
From: "Alexander Hochhausl" <plustech at optonline.net>
To: "'Mercedes Coupes Mailing Lists'" <mbcoupes at mbcoupes.com>
Sent: Wednesday, November 07, 2007 8:30 PM
Subject: [W126 Coupe] Wheel Shimmy Driving Me Crazy!



>

> Hey All,

>

> I've had this problem on my 89 560 SEC as well as my 81 380 SLC. I'm

> thinking some of you must have also.

>

> There is a vibration, hopping or shimmy - hard to describe, but

> definitely from the front end at between 60-80 MPH, but not always.

> Sometimes more than other times. I can feel it in the steering wheel,

> but more so in the body. More when driving straight, less when in turns.

> In the summer it's not so bad, but now it's getting cold and definitely

> more pronounced.

>

> I've replaced the steering idler arm assembly, all the rod ends, and a

> number of bushings on the suspension over the years but still the same.

> I keep thinking it's steering related. The driver side front wheel is

> solid as a rock, but the passenger side, with reasonable effort, I can

> swivel the wheel slightly - I think it is more than it should be.

>

> I've had the tires balanced and rebalanced. Same thing, even when I

> rotate the tires. I'm thinking a harmonic builds in the passenger wheel

> due to that slight bit of play, and builds with the speed.

>

> Am I barking up the wrong tree? Is there another bushing or something I

> am missing (Oh, I replaced the shocks too - no change).

>

> I have to say, I love the car, I drive it like crazy, but this is

> driving me crazy. Any thoughts anyone?

>

> PS. (from the discussion of air pump and EGR valve): I just got my car

> inspected. Emissions were CO - practically none, HC = 25. The mechanic

> said it is unbelievable how low my emissions are. I think his machine is

> broke, but I'm curious, how does this compare with your readings. I have

> messed around with the mixture and other things (due to supercharger

> mod). And these readings are with no air pump and no EGR.

>

> Thanks in Advance Ladies and Gents.

>

> Alex H

>

> 89 560 SEC (Supercharged)

> 81 380 SLC

>

>

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