Date:         Wed, 23 Nov 2005 20:26:41 -0800
Reply-To:     Evan Mac Donald <macdonald1987@SBCGLOBAL.NET>
Sender:       Vanagon Mailing List <vanagon@gerry.vanagon.com>
From:         Evan Mac Donald <macdonald1987@SBCGLOBAL.NET>
Subject:      Re: 81 Westy engine  - does anyone know what this sensor is or
              does?
In-Reply-To:  <20051123141010.SALH17838.fed1rmmtao05.cox.net@[172.18.180.8]>
Content-Type: text/plain; charset=iso-8859-1

As was suggested earlier, it is indeed a sensor for obsolete test equipment. It is in fact a TDC (Top Dead Center) sensor. Only needed if you plan on trying to use that outdated vaccuum tube box from VW.

Olin Bausback <mountain-man@COX.NET> wrote:Hi all,


I just finished rebuilding my 81 air cooled Westy and found an unused sensor. The sensor is mounted in upper right side of the case, just where the case connects to the clutch housing on the manual tranny. There is a cable lead (about 0.5 meters) coming from it which has a three prong male plug in a triangular pattern. It wasn't connected to anything when I took the engine apart.


Is this a speed sensor? Is it there for use with an auto tranny? If it is a speed sensor, I'm going to try hooking up a cruise control to it.


Thanks for any information you are able to offer.


Olin in Santa Barbara



Evan Mac Donald

1984 Wolfburg
1985 GL 7 Pass.
1991 Carat Weekender
1972 Chevy P/U
1993 Bonneville