[urq] Speedo sporadic

[dgraber460 at aol.com]

Thanks Steve;
I'll take a look and see if I can get the unit apart enough to view the latter. I have had several gauges down to the fist one as I have a spare that has the infamous cracked gear lending the odo inop/sporadic - but the needle in that one works great.
Seems as if I need to make one good unit out of the 2 I have. 


Dennis 
Denver



-----Original Message-----
From: Steve B <urq at pacbell.net>
To: audifans urq <urq at audifans.com>
Sent: Thu, Oct 24, 2013 10:45 pm
Subject: Re: [urq] Speedo sporadic


Done a archive check? This is a standard VDO weakness.  There are two gears in 
the odo drive that will flake out.  First is a plastic gear which is press fit 
onto a metal shaft; the stress of the shaft along with time and temperature 
cause the gear to break and slip and/or jam.  The saxons is a metal worm gear 
that drives the plastic gear.  Here again, VDO trusted a pressed in polished 
shaft to work robustly over the years and miles; unfortunately out too will slip 
over time.  Based on your description, I'm thinking the latter.  Unfortunately, 
those robust thinkers at VDO will not sell replacement gears to just any mere 
mortal, as they have super secret and precise calibration techniques only 
trained technicians know to make sure your odo is properly calibrated.

Some people buy the garbage someone puts out that resetting the trip odometer 
while the car is moving is what causes the gears to malfunction.  I call BS, 
even if that were true, why would they have designed the unit so flimsily in the 
first place!?!

Steve Buchholz

dgraber460 at aol.com wrote:

>
>Anyone have any ideas what would cause a speedometer to work sporadically? It 
is better in the cold, but will quite often not come off the peg for a good part 
of the trip. The cable is fine as the odometer works all the time whether the 
indicator needle is registering or not. When it does bounce to life it reads 
correctly. Don't they use a magnetic pick up to move the needle? How can that be 
temp sensitive. Very confusing.
>I had taken it to the local "go to" shop some time ago and he blew me off with 
a "oh about $200-250" response - translated I'm not interested in touching it.
>The patient is an URQ so the 4k and CGT units will work but do not look right 
with the lower speed range
>TIA
>
>
>Dennis 
>Denver
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