Re: 4000 Quattro Question

[Peter Orban <ORBAN@nrcamt.iamt.nrc.ca>]

>...claimed that this is a very common problem with VDO odometers (since it
>happended to me three times in two years, I can hardly argue). He explained
>what was wrong, but I can't really recall exactly. He did, however, say to
>never poke the odometer button on a VDO while the car is moving.

I had the same problem on the VDO gauge on my '88 Jetta. For me the
the problem was that the last wheel in the odometer, that is driven
by the shaft, was slipping on the shaft. The wheel is die cast and is
a press fit on the shaft. I rolled the shaft under a file, effectively
putting a serration on it where the die cast wheel is on it. That
solved the problem.
As for the reset for the trip odometer, the button lifts out the
little gears between the numbered gears, and the numbered gears are
returned to 0 by a set of springs pushing on a cartoid shaped cam
profile moulded on to the side of the wheels. There should not be any
problems, even if the car is moving while reseting the odometer.
Now, the Audi gauge could be different, but I doubt it.

Peter
orban@nrcamt.nrc.ca