It's your o2 sensor.  I just dealt with this in my 82.  Good luck!!
Trea

From: timnew <timnew@PACBELL.NET>
Reply-To: timnew <timnew@PACBELL.NET>
To: vanagon@GERRY.VANAGON.COM
Subject: OXS light
Date: Fri, 23 Mar 2001 17:52:28 -0800

My OXS light just came on, what are the possible causes for this?  It seems
to be running fine.  The manual says it comes on to indicate a scheduled
service.  I don't think that's it because my odometer hasn't worked for a
few thousand miles.

Tim New
86 GL

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