Re: 91 SC1

There will only be one speed sensor. The only reason I can imagine for the
odometer not working but the speedometer working, assuming a good
replacement instrument cluster (which may not be a valid assumption here),
would be some kind of strange power supply problem..

-- 
Robert Hancock      Saskatoon, SK, Canada
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"Dan Hicks" <[EMAIL PROTECTED]> wrote in message
news:[EMAIL PROTECTED]
> That still seems a little odd, as one would think that the
> speedometer and odometer would be run off the same pickup on the
> driveshaft.  I wonder if there is some sort of interlock to allow
> the unit to be used as a demo without registering miles, or some such?
>
> I suppose you might poke around on the transmission to see if there
> appear to be two separate speed pickups.  Dunno where these would
> be, exactly, though.
>
> John Jennings wrote:
> > Thanks for the reply.  The entire unit is hooked up electronically.
> > There are no connections to the head cluster unit except wires. I traced
> > the circuit board to make sure there were no burn looking marks.  I
> > guess the used unit was working since it had 144,000 miles on it.
> > Everything works in both the old unit and the other one I put in except
> > the odometer.  Could it be there is some connection to the engine or
> > wheels (?) that has a sensor that could be the problem?  Ideas on a
> > source to lookup the wiring?  Thanks.
> >
> > Dan Hicks wrote:
> >
> >> JJ wrote:
> >>  > I have a 91 SC that has suddenly had the odometer stop working.
> >>  > All the other gages, tach, and speedometer work just fine.  I
> >>  > disassembled the unit and cleaned and lubricated the odometer
> >>  > unit but it did not fix the problem. It seemed that the odometer
> >>  > must be bad so I bought a used complete head cluster at the local
> >>  > used parts store. The Odometer in that unit does not work either.
> >>  > Now, on to the question... Does anyone know why just the odometer
> >>  > would stop working and what can be done to repair it? Is there a
> >>  > sensor somewhere that regulates the odometer?
> >>
> >> So the speedometer working?  I believe that unit is purely
> >> mechanical, so if the speedometer is working, the odometer should
> >> too.  Could be the used unit was already broken.
> >>
> >> Certainly when you disassembled the unit you should have seen the
> >> mechanism that connects speedometer to odometer, and anything that
> >> could interfere with the connection.
> >>
> >
>
>
>
> -- 
> Dan Hicks
> Talent develops in tranquillity, character in the full current of
> human life.
>