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Apr 26th, 2026 | | AD Chevy Trucks  Over 6,000 pictures Brad Allen has an awesome collection of Chevrolet factory pictures that he has set up from film strips. Check them out!
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| | | | Joined: Jul 2000 Posts: 19 New Guy | | New Guy Joined: Jul 2000 Posts: 19 | During the last cold spell my speedo (55.1 3100) started making horrible noises and the needle jumped around, sometimes claiming I was going 80 when I knew I was under 40. Seems to be less present with somewhat warmer weather. Speedo cable is near new, BTW.
Can I lube this thing somehow--or some other fix--or is this thing due for replacement/rebuild? | | | | | Joined: Sep 2010 Posts: 575 Shop Shark | | Shop Shark Joined: Sep 2010 Posts: 575 | Plastic or metal speedo cable? | | | | | Joined: Sep 2010 Posts: 575 Shop Shark | | Shop Shark Joined: Sep 2010 Posts: 575 | https://www.stovebolt.com/ubbthreads/ubbthreads.php?ubb=showflat&Number=687043&Searchpage=1&Main=99769&Words=%22Speedo+lube%22&Search=true#Post687043
Sounds like it could use a little light lube. | | | | | Joined: Jul 2000 Posts: 19 New Guy | | New Guy Joined: Jul 2000 Posts: 19 | | | | | | Joined: Jul 2001 Posts: 3,887 Cruising in the Passing Lane | | Cruising in the Passing Lane Joined: Jul 2001 Posts: 3,887 | with a new cable, the most likely problem is a gummy speedo head, I think you're stuck with opening it up and cleaning the spinning bits right at the input .... see hereBill | | | | | Joined: Feb 2004 Posts: 29,778 Kettle Custodian (pot stirrer) | | Kettle Custodian (pot stirrer) Joined: Feb 2004 Posts: 29,778 | Did you change the housing, or just the cable inside? Quite often, the problem is a worn or damaged outer housing, causing the cable to bind and chatter. Grease or powdered graphite will help a little, but both the cable and the outer sheath should be changed as a set.
Jerry
"It is better to be silent and be thought a fool than to speak and eliminate all doubt!" - Abraham Lincoln
Cringe and wail in fear, Eloi- - - - -we Morlocks are on the hunt!
There is nothing noble in being superior to your fellow man; true nobility is being superior to your former self. - Ernest Hemingway
Love your enemies and drive 'em nuts!
| | | | | Joined: May 2007 Posts: 289 Shop Shark | | Shop Shark Joined: May 2007 Posts: 289 | Best way to isolate the problem is to disconnect the cable at the speedometer and drive the truck. If you still have the noise, it's in the cable - if not then it's in the speedometer. | | | | | Joined: Jul 2000 Posts: 19 New Guy | | New Guy Joined: Jul 2000 Posts: 19 | Yup. Changed the whole tamale, went metal housing. Actually, some noise was present both connected and disconnected. I guess I pull the speedo and have a look. After 56 years, I guess it's due.
Thanks, one and all. | | |
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