Check the archives.  I'm sure there are a bunch of posts on this topic.  I
don't have my Bentley in front of me so can't tell you the voltages for
sure.  Basically, once the sensor is hot the voltage rises as the mixture
gets richer.  (I think)... Check the archives to be sure.

Dave in KC
85 Westy

----- Original Message -----
From: "Alan Gondry" <agondry@ATTBI.COM>
To: <vanagon@GERRY.VANAGON.COM>
Sent: Monday, January 13, 2003 12:18 PM
Subject: O2 sensor testing

Is there a way to check if the O2 is operating under normal parameters?