[Vwdiesel] 85 Jetta TD speedometer failure

[Roger Brown]

Doyt W. Echelberger wrote:
> My 85 Jetta TD speedometer is failing. It won't show any speed above 20 
> mph, and sometimes the needle bobs around. My mechanic says he thinks the 
> speedometer head is kaput.
> 
> I have on a shelf in my garage the dash and speedo/tachometer module from 
> my departed 84 Jetta na diesel, but no experience swapping such elements.
> 
> Anybody know about OTHER ways to display speed that get around such a 
> problem?     "engle31 at comcast.net"  and Hayden have been posting about 
> dash-swapping. Maybe they will read this and chime in.
> 
> How do people who build modified cars/hot rods display speedometer 
> information? Could I mount a generic speedometer head on my dash and run a 
> speedometer cable to it? Anybody done that? I'd like to get some 
> speedometer information working before I end up with another speeding citation.
> 
> Doyt Echelberger 

Easy enough to swap the speedometer (this is a writeup on swapping the tach, but speedo 
swap is the same):
	http://www.4crawler.com/Diesel/CheapTricks/Tachometer/index.shtml#OEMInstall

Might make sure the speedo cable is well attached at both ends.  Also, see if the speedo 
needle has worked loose on the center post.

And check that the plastic odometer drive gear is intact:
	http://www.4crawler.com/Diesel/CheapTricks/Odometer.shtml
If that is sticking, it can affect the speedo reading as well.

-- 
    Roger