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Old 01-10-2002, 04:28 PM
sixto's Avatar
smoke gets in your eyes
Join Date: Jun 2000
Location: SF Bay Area
Posts: 20,115
W126 bouncing speedometer

The speedo in the 91 SE has been steady for the year and a half I've had the car. When I parked today however, it jumped just as I came to a stop. I jammed on the brake again and it jumped again. It didn't jump again after that. I haven't driven it since. The only thing out of the ordinary is that my washer fluid light came on yesterday and I haven't attended to it. It was off when the speedo did its bouncing bit.

I've been hearing a ticking sound from behind the dash that corresponds to vehicle speed. Maybe the cable's going?

91 300SE
81 300SD
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Old 01-10-2002, 09:36 PM
Posts: n/a
bouncing speedometer cable


If you do not get a resonse from a MB technician, you may want to try the following:

Try disconnecting the speedo cable housing and removing the flexible drive cable from the housing. Then clean and lubricate the drive cable with lithium grease.

Good Luck.
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Old 01-10-2002, 09:49 PM
Senior Member
Join Date: Jul 2001
Location: San Antone
Posts: 408
Be careful, do not use too much grease. Too much will cause excess friction and the cable will break (been there, done that - a long time ago). I just lubed my speedo cable with synthetic dri-slide from an aerosol container. Cable works fine, no noise, and the speedo needle very steady at all speeds.

Good Luck!
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Old 01-11-2002, 01:51 PM
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Join Date: Apr 2000
Location: Minnesota
Posts: 92
Instend of lithium grease, can you use ATF or use WD-40 to lube the cable?? Thanks
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