had a similar problem on my 87. that turned out to be a tierod end. changed it out and no more problem. my syptoms was a terrible shaking at above 65 slow down and it smoothed out. when i got under it i found the left side rod could be moved by hand.

i'm sure you'll find a similar problem if you look. it wouldn't be a bad idea to start with the lug nuts to eliminate a loose wheel. from there go to the tierods and all the steering components.

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Thanks Much!
Craig

1972 350sl Red/Blk 117k
1988 420sel charcoal/Blk 140k
1987 420sel gold/tan 128k
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