sending unit problem

I been driving around with the gas gauge not working. It always reads full no matter what. Its been couple time already where i been left stranded due to no gas. i have to gestiamte how much gas i have. when i turn the key the gas gauge reads past full. ill dropped the tank, and checked the...

I have a 1967 Mustang convertible.The gas guage is reading E all of the time.I would like to fix it but I don't know where to start.I have around ten gallons of gas in the tank.When I turn the ignition on the guage will move from below the E line to the E line. That is it. I went under the tank...