On Sat, 8 Feb 2003, David Marshall wrote:

> There is a vacuum pump on all VW Diesel motors - right where the distributor
> would be in a gasoline motor.  No vacuum = no brakes!

I know, but I doubt that would be suitable for providing shift control on
an automatic.  Vacuum pump vacuum increases with RPM, manifold vacuum is
related to the throttle opening.

             _ _
  __ _ _   _| | |  | David M. Brodbeck (N8SRE)              Ypsilanti, MI
 / _` | | | | | |  +-----------------------------------------------------
| (_| | |_| | | | @ cyberspace.org
 \__, |\__,_|_|_| "Everything is linear if plotted log-log with a fat
 |___/             magic marker." -- Mar's Law