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Old 04-20-2003, 12:41 AM
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Join Date: Mar 2003
Location: Houston, Texas USA
Posts: 59
300 SD Shakes

I have a 1984 300 SD with 131,00 miles that shakes a little at stop lights (sometimes). What causes this? Jacob Wissler Jr
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Old 04-20-2003, 02:58 AM
sixto's Avatar
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Join Date: Jun 2000
Location: SF Bay Area
Posts: 18,745
Do a search on rack damper.

Also search on Diesel purge.

91 300SE
87 300SDL
83 300SD
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Old 04-20-2003, 10:17 AM
Registered Diesel Burner
Join Date: Aug 2001
Location: Northern Virginia
Posts: 2,911
Sometimes I have seen it referred to as "rack dampener" so you might try that spelling too.

The classic rack dampener issue is a shaking idle when hot (especially just after an interstate run) but not much of a shake when cold.

Other things that can have an impact are the motor mounts and motor shock absorbers. You can also have a cylinder with low compression that is causing the shake.

Tell us more about the circumstances of the "sometimes" and it might be possible to do an "internet diagnosis".

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Old 04-20-2003, 12:22 PM
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