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Old 04-22-2003, 07:13 AM
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Join Date: Dec 2001
Location: Cherry Hill, NJ
Posts: 31
Unhappy At hwy speed - Terrible Shaking from Rough Part of Road

Hey Guys. '92 300TE 4 matic. At highway speeds - for example 60 mph, I hit a series of small potholes and the front end begins to shake and get worse. Kind of like the shake gets momentum and I have to brake to lower speed for it to stop.

The shaking is so bad I almost think the front wheel lugs are loose and wheels are shaking off. Seriously, this is scary on the highway - I'll keep out of that lane this morning.

Would this be the Tie Rod ends, Ball Joints, Idler Arm Bushings(?)???

And what are the idler arm bushings? I will check the play on the wheels today.
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Old 04-22-2003, 07:16 AM
junior member
Join Date: Oct 2001
Posts: 592
may want to check steering damper.
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Old 04-22-2003, 11:56 AM
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Join Date: Feb 2003
Location: Ontario, Canada
Posts: 3,160
Shocks ??????????
2007 C 230 Sport.
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Old 04-22-2003, 01:17 PM
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Join Date: Mar 2003
Location: Southern California
Posts: 2,007
Steering damper is the likely suspect. Look at the following thread from a few days ago for a detailed discussion.

Scary Front End Vibration

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Old 04-22-2003, 01:45 PM
Posts: n/a
The first thing you need to do is raise the car safely and do the four P's, Push, Pull, Pry and Prod. Look for anything loose. Even with worn out shocks and steering damper, if everything is tight, you shouldn't get a violent shimmy like you describe.

You also need properly balanced tires. Many shops will balance with weights ONLY on the inboard lip. This is static balancing and will prevent the wheel from jumping up and down. You need a dynamic balance with weights on both planes to prevent the wheel from "wobbling."

Good luck,
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