At 07:25 AM 8/24/2008 -0400, Roger VanTill wrote:
>Got the same problem after replacing the thermostat housing. Is there
>a way to test the sensor? Wiring?

Turn the key on and *briefly* (few seconds) short the terminal to
ground while someone watches the gauge for you.  It should rapidly
climb.  If the 2.1l engines use a two-terminal sensor/connector for
that, short the two terminals together.
Be sure you have the gauge sensor, not the T-II input to the AFM.

If the gauge works, you have a dirty connection or bad sensor.  If
not, drive a common pin or sewing needle through the wire behind the
connector and use that to ground it.  If *that* works, you have a bad
crimp or broken wire at the terminal (which doesn't rule out the
other problems completely, of course).

If it doesn't work, ground the wire at the panel connector -- if
*that* works you have an open in the wiring somewhere between panel and sender.

But since you've disturbed things at the back end, likely the problem is there.

--
David Beierl - Providence RI USA -- http://pws.prserv.net/synergy/Vanagon/
'84 Westy "Dutiful Passage," '85 GL "Poor Relation"