Check the voltage rectifier mounted to the back of your instrument cluster.
It's the small, black, square component with three metal legs. (contacts)
It uses a single mounting screw. Once you remove the mount screw you
can/should be able to slide the rectifier out of its contacts though it
should be a snug fit. Check that all three contacts are sound. May need
replacing. Both gas and temp gauge circuits run through this component. If
both are bad/intermittent, the rectifier is often the culprit.
Kep
'79 scirroco
'86 country home
'86 Audi powered syncro

-----Original Message-----
From: Vanagon Mailing List [mailto:vanagon@GERRY.VANAGON.COM] On Behalf Of
dj
Sent: Wednesday, February 04, 2009 10:16 AM
To: vanagon@GERRY.VANAGON.COM
Subject: gas gauge and temp gauge work intermittently

My gas gauge and temp gauge work intermittently. Both are either working or
not. Any advice as to what to do? deek

 84 westy full camper