my fuel gauge reads sporadically. it usually move within 1/4 of a tank of whats actually in there, up an down all the time. i can never tell whats really in there, just more or less within a 1/4 of a tank of where it moves. i understand that atleast i know more or less whats in there, but a 1/4 of a tank is alot, and a pain the a**! any help on what it could be?

 

Fuel level sender?

 

how hard is that to replace? diy job?