[TBONE1964]

Ok, here is how it works.

If you have lost the ground on the sending unit, the gauge will go past full (3:00)

If you loose power on the sending unit,(the wire that hooks to the stud) the gauge will do nothing and stay where it was last.

If you loose ground on the gauge itself, the gauge will go to empty.

If you loose power from the fuse box, the gauge will stay where it was last.

This is providing you do not have multiple problems. It sounds to me from your description of the problem that the gauge is just slow to react. My 72 pick up has a very slow reacting gauge. It works fine and does not have any electrical connection issues, it is just a slow gauge.

Hope this helps,
Tom