Fuel Gauge Drifting

[Matthew Caprio <cap29100@flash.net>]

Car is 88 5kQnonT.

Today I experienced fuel gauge drift after filling up the tank....  Gauge
drifted back and forth between Full and less than half full back and forth
a couple times slowly OVER ABOUT AN HOUR'S TIME.  The Temp gauge may have
been drifting back and forth also, although it is more difficult to tell
what is natural, and whether or not it corresponded to the fuel gauge drift...

Voltage regulator on the printed circuit?  Fuel gauge?  Sending unit?  Any
ideas or been there's??

Thanks in Advance

Matt Caprio
Austin, TX