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Old 03-08-2004, 02:52 PM
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Join Date: Sep 1999
Location: USA
Posts: 338
1991 W126 Has Violent Front End Shake @60 MPH After Hitting Bump

My 1991 350SDL W126 has 159K on it and recently had a major front end/steering rebuild. Now it will vilolently shake if I hit a goiod bump in the road right around 60MPH, the shaking can only be stopped if I hit the brakes. Work was done by a local MB trained independent. I took the car to the local MB dealer. They visually inspected the front end, they tell me the front end is fine and can't determine a source of the shaking.

Any ideas appreciated.

Thank you.
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Old 03-08-2004, 03:40 PM
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Join Date: Jul 2002
Location: Trenton, NJ
Posts: 248

Was the steering damper replaced as part of the front end rebuild? It probably was but better to ask than assume.

The only other thing that I can think of would be extra play in a bushing due to something not being tightened properly.


'87 560SEL 267K (177K on motor) Blue/Blue
'98 Buick LeSebre 60K (wife's car)
'56 Imperial Sedan 124K
Past Cars:
'67 Dodge Monaco 130K (Sold)
'87 Chrysler 5th Ave 245K and going strong (sold)
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Old 03-08-2004, 03:48 PM
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Join Date: Aug 2001
Location: Evansville, Indiana
Posts: 8,150
I second the steering damper. You will need to check to see if it has a "hard" spot in the travel -- this will cause is to "bounce" rather than just absorb the shock from the bump.

You should also check the front wheel balance -- you may have tossed off a wheel weight, so that the damper is overworked from an out of balance tire, too.

That happens fairly frequently -- I found a wheel weight in my brother's grill the the other year, obviously tossed off another car's wheel and off the road.

1972 220D ?? miles
1988 300E 200,012
1987 300D Turbo killed 9/25/07, 275,000 miles
1985 Volvo 740 GLE Turobodiesel 218,000
1972 280 SE 4.5 165, 000 - It runs!
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Old 03-08-2004, 03:48 PM
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Join Date: Dec 2002
Location: east of Atlanta, north of Macon Ga
Posts: 185
Two more possibles are the idler arm assembly or the tires.
1991 300SE (my ride, 279,000 miles, looks almost new
1954 Cadillac (21 yo son's car, he bought when age 15)
1972 SeaBird 19 ft runabout (old but solid, slant six, Volvo sterndrive perfect condition, undergoing complete overhaul and refit)
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Old 03-08-2004, 03:58 PM
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Join Date: Sep 1999
Location: USA
Posts: 338
I do not find the steering damper on the list of front end parts replaced so I will get a new one installed. I see that Bilstein and Boge make the dampers, is one better than the other?

Thank you.
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