Usually a bouncing speedo or tach is caused by a cable that has a kink or
needs lubrication as it's not rotating smoothly in the sleeve.
There is a voltage gauge under the steering column for the instruments which
regulates some of the gauges like the temp and fuel gauge. It could also be
that the senders are bad.
BTW, w/o the right angle drive you may be kinking the line. Cables don't
like sharp bends.
Mike
----- Original Message -----
From: "R Haug" <haugchiro@moscow.com>
To: "Christopher Dunn" <christopher-dunn@home.com>;
<datsun-roadsters@autox.team.net>
Sent: Thursday, June 07, 2001 8:47 AM
Subject: Re: a few quirks (read: problems)
> Christopher Dunn wrote:
>
> > ok guys, here goes:
> > i got the roadster (a 66 with a 69 engine) and had a blown head
gasket.
> > fixed that, no prob. now my main problem is that, for the most part,
none of
> > the gauges work. the tach gives a rough estimate of rpm, but bounces
alot.
> > other than that, no other gauges work. i attempted to takle the speedo
> > tonight. get under the car, the sppedo cable isn't quite hooked up to
the
> > tranny right. easy fix....or so i thought. for one reason or another,
the
> > little gear type box that's on the end of the cable (the things that
makes
> > it able to turn 90 degrees) doesn't want to seat right and will fall
right
> > off. so i say screw it, i can hook it up directly without it, there is
> > enough play in the cable. after a little work, it goes on, got
everything
> > lined up right, then i go to check the back of the speedo. everything's
good
> > to go there too, so, time for a test drive. IT DOESN'T WORK!!!!!!!!!!!
wth
> > is going on? did i make the roadster gods mad or something???? anyone
with a
> > clue as to why this is happening, let me know. thanks........Chris
> > p.s. it's strange how all the bulbs work for the instrument panel, but
not
> > the gauges themselves....
>
> You may have a broken speedometer cable.
> Did you check it to see?
> There is a little gear in the transmission that could be
> broken too.
> Could have a bad gauge.
> All the lights (bulbs) work independently of the gauge.
> Bob
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