Re: Speedometer and Odometer out

["----> Bob" <mx@snet.net>]

todd@qualmedoregon.com wrote:
> 
> I remember hearing that a plastic gear coming loose from its
> shaft was a common cause of the odometer failing, but would
> that precipitate the failure of the speedometer as well?
> both of mine are not functioning, and I'm wondering if I
> should check the sending unit, cable, or dash gearing first.
> I'm getting tired of doing the math on my tach reading.
> 

On the 84 4000Q there are two speedo cables. A long one that goes from
the tranny to a small black box under the hood, and the second short one
goes from that box to the back of the instrument cluster. In my case,
the smaller one died, but I am replacing both anyway since the plastic
covering on the long one is torn anyway. They are about $30 each.

As far as the speedo/odo goes, the odo is driven off the speedo. So if
the speedo isnt working, nothing will. 

Bob