there's two levels of new 02 sensor.......
there's OE .....in which you get the connector plug ........those can be as
high as $ 130, even more.

then there's the generic 3 wire Bosch,
where you slice to your existing wires...........those are in the $ 40 to 55
range.

seems to me the propane test would confirm that it can put out a voltage
when it's hot, but I don't see how that would be a very definitive test,
not compared to measuring voltages like I just posted about , on a running
engine,
even on another car .......doesn't have to be on your vanagon.

----- Original Message -----
From: "Jim Felder" <jim.felder@GMAIL.COM>
To: <vanagon@GERRY.VANAGON.COM>
Sent: Thursday, September 11, 2008 12:43 PM
Subject: Re: Question about temp II sensor and bad running

> Isn't there a test for the O2 sensor where you heat it with a propane
> torch and measure they output? Can anybody tell me the procedure? I
> just priced an O2 sensor and I sure don't want to replace this one if
> it isn't bad.
>
> Jim