gas gauge.....

Im starting to think my gas gauge is reading wrong. It reads but very low and wont go past half way also it was empty i went to fill it up not even 5 gallons it clicked over like it was full.....

could this be caused by the white face gauges or would it be caused by a sensor sometimes it will go up and down if i turn it off and start it back on ..
 
sidewayzisbest said:
is that the unit that plugs on the top of the gas tank? What all will i need to replace since im goign to have to get a new fuel pump figure i go ahead and change that and see if that works
Yes that is the other plug on top of the gas tank. I got mine from Ford for $67.26 Part #E7zz-9275-A. Also got a new filler neck seal while I was at it for $16.22 Part #F4zz-9072-DA. Mine did the same thing. It works perfect now. :D