Frank,
Depending on the vehicle, it is not uncommon to use a voltage regulator in the gauge assembly, as raw battery voltage moves around
25%. If the regulator fails, the gauge will read max fuel.
Steve

"frank1492" wrote in message ...
Not really "electronic" but...
I was going along and suddenly my gas gauge flipped to the max.
The sender is resistive type with "wiper." I disassembled it and found
nothing wrong. Checked the ground connection to the tank, as well as
the wiper connection. All appeared to be in order.
Any ideas would be much appreciated.
Thanks.
Frank