Fuel Gauge Full.

[Muddemon]

My fuel gauge was staying at the 3 oclock and not doing anything.I checked my wiring and noticed the wire going to the sending unit had been cut by the PO. I just reconnected it. It seems to be working now. My only concern is that when i fill it up as i did as soon as i got it working, it marks full a bit passed the full indicater. Is this normal or is there maybe a ground issue or something else. If i check the power at the sending unit my gauge goes down to between empty and 1/4 of a tank.