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Old 11-27-2001, 06:31 AM
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Accelerator pedal vibration

Everything else seems to be working fine on my '86 300SDL, 91K although I notice a very low level but very annoying vibration that comes through the accelerator pedal at all speeds. It's enough to make your foot itch and ruin a nice drive.
Has anyone ever experienced this and might know the cause and fix?
Thanks for the help.
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Old 11-27-2001, 09:56 AM
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Join Date: Aug 1999
Location: Florida / N.H.
Posts: 8,804
First check is motor mounts.
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Old 11-27-2001, 10:04 AM
Randall Kress
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The same thing happened to my parent's 91 420 SEL when it was brand new. Practically had to take apart the whole car to find the source of the vibration. The fix: a bit of steel welded to the pedal to couteract any vibration. A strange dealer fix...
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Old 12-15-2001, 07:37 PM
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Join Date: Jul 2000
Location: Location: NH
Posts: 323
the accelerator pedal by design is supposed to isolate the linkage from itself.

a new pedal is very reasonable and very possibly will make a difference.
79 240D
42 years a Diesel addict

250SE sold
220D sold
280S sold
300D (2) sold
300CD sold
300DT sold
300SD sold
380SL sold
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Old 08-28-2005, 04:46 PM
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Here's Your Sign.......
Join Date: Aug 2004
Location: Syracuse, NY
Posts: 327
My turn to bring back an oldie..............

This just started on my car - 1987 300SDL........

The entire car feels great!!!!!! Steering wheel is steady and firm, suspension feels wonderful, tires are great, transmission never felt better (finally - quarter turn here and about 'dialed in') - yada - yada - yada.............

My right foot feels like it is on a "Magic Fingers Bed" (Age Reminder...)

To me - this is not a major issue - but is the SDL trying to tell me something???

Thanks Folks (as always.........)

98 K2500 Suburban 6.5 Luxo Barge

"We cannot change the wind - But we can adjust our sails"
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Old 08-28-2005, 05:04 PM
Join Date: Aug 2000
Location: Holland, MI
Posts: 1,316
The SDL OM603 has a rubber isolator in the linkage at the firewall, not found in engines.

Check to see if the rubber isolator is in place, has not hardened up like a hockey puck, or broken so that there is metal-metal contact.

Also be sure that the linkage is free and lubed.

Mine did this once in a while, but it usually went away after I pressed the pedal a few times more.

Best Regards,
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