Interesting thing.
There is a recommended retrofit of the O2 sensor in Porsche cars, I think
about 82-92.
Originally they came with a single wide O2 sensor and the retrofit uses a 2
wire sender.
The only difference is that the two wire has it's own ground and the single
wire grounds through the system.
Possibly some O2 problems could be repaired with just a separate ground wire
to the sensor.

Stan Wilder
Engine Ceramics
214-352-4931
www.engineceramics.com

----- Original Message -----
From: "Tim Demarest" <tim.demarest@POBOX.COM>
To: <vanagon@GERRY.VANAGON.COM>
Sent: Friday, September 30, 2005 11:22 AM
Subject: Re: O2 Sensors

> Nah, probably not that calculated... to many mechanics, anything
electronic
> is still big scary voodoo that can only be tamed if you follow the proper
> rituals.
>
> At 11:36 AM 9/30/2005 -0400, Wil Haslup wrote:
> >I think some shops probably say stuff like that so owners don't start
> >installing the simpler items...letting them think there is more to it
> >than is apparent.