91 Odometer Goes Crazy!

The odometer in my 91 SL-2 sticks and then goes into overtime, turning
over like a clock. The speedometer function does not appear to be
affected, however. Both the trip odo and regular odo exhibit the same
anomaly.

Anybody out there have an answer?

 

Sorry, I don't; but you might be interested to know that Mark Twain had a
similar problem!
http://www.underthesun.cc/Classics/Twain/mywatch/
Scout

 

From the posts I've read, that should be a mechanically activated odometer.
If that's correct, the odometer and trip odometer 1/10 mile digit wheels are
driven off of a worm gear on the speedometer cable. If the rest of the
digits are changing with the 1/10 wheel, then something is binding. Not sure
how easy this is to remove and repair. Back in the '60's it wasn't too bad.
Since the advent of anti-tamper legislation, it has gotten more difficult to
take apart and service odometers. Worst come to worst, you might have to buy
a used speedometer and install it.
If you do dis-assemble it for inspection, do so on a clean surface. The
speedometer portion has a disk magnet that rotates inside an aluminum cup.
The clearances are tight and any crud that gets pulled onto the magnet will
only compound your problems. It is a somewhat fragile assembly.

Am I showing my age with talk of 'back in the '60s? I'm 53 and have a 3 year
old grandchild.

_________________
| The odometer in my 91 SL-2 sticks and then goes into overtime, turning
| over like a clock. The speedometer function does not appear to be
| affected, however. Both the trip odo and regular odo exhibit the same
| anomaly.
|
| Anybody out there have an answer?

 

Thank you, Oppie. I have pretty much reached the same conclusions, too.
Has anybody out there taken one of these out/apart?

 

I recently bought a replacement gear for $30 and replaced it in about 2
hours.

http://www.odometergears.com/

You have to be careful to get the odometer out of the cluster, but then its
a easy to replace the gear.