OK, new generic sensor is in. After warm-up  the voltage swings from .18 to
.84.  The van seems to be running well. I will continue to drive it all
weekend.

Thanks again for your help, I hope this was the issue.

Bryan

-----Original Message-----
From: Scott Daniel - Turbovans
Sent: Monday, January 02, 2012 4:33 PM
To: vanagon@GERRY.VANAGON.COM
Subject: Re: My turn with the O2 sensor issue.

Hi,
I only test them while connected to the ecu ..and engine running, warmed up.
if it's only .15 to .17 volts ..it's stone dead.

you want to see a pretty large swing ....              .2  to .7 or .8
Large swing.
I've had them fail in as little as a year, fwiw.