Fuel Gauge

[Sigilobaphomet]

Help needed! - my fuel gauge has been reading permanently full for about a year, as you need to remove the tank to change the sender unit I've taken the opportunity to change the tank (pro-alloy) and fitted a new sender unit - gauge still reads the same! With no power it slowly falls to empty but as soon as there's power it shoots immediately to completely full?

[andrewr]

Probably the wire connected to the sender is shorting to earth somewhere along its route.