Aaron,
Most likely, you probably have a bit of corrosion on the steel speedometer
cable inside its sheath. You can try putting some cable lube (a
graphite-based material with a liquid carrier in a bottle), and put it down
one end of the cable. But, for my part, I'd take the speedo cable out of
the car, put some liquid graphite lube down one end and work it back and
forth. I don't recall whether the cable will come out of the sheath when it
is completely disconnected, but I think it does. If so, you can clean up
any rust, lube it well, and be good to go.
Gary
----- Original Message -----
From: "Aaron Polivka" <aaron@polivka.org>
To: <datsun-roadsters@autox.team.net>
Sent: Wednesday, April 21, 2010 4:50 PM
Subject: [Roadsters] Speedometer going wild
>I just took the roadster out of storage for "spring". Unfortunately,
> it's supposed to be below freezing tonight.
>
>
>
> But, anyway, on my way home, I noticed that at about 60+ miles per hour
> the speedo starting going wild. It was jumping back and forth wildly
> plus or minus 20 mph or so. It has previously been rock steady at every
> speed. When I slow down, it does settle out, and doesn't start jumping
> again till I go rather fast. It's a 1600 with the (wildly optimistic)
> 140mph speedo. Is this something I should worry about? I've had
> tea-baggers where there speedo is basically a moving idiot light that
> bounces, but my Roadster historically has been spot on accurate and
> steady. Should I disconnect it and squirt in some graphite or something?
>
>
>
> Regards,
>
>
>
> -aaron the lurker from Wisconsin
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