The gas gauge on my Accord randomly doesn't work. Sometimes it works a little bit, like it'll read a half a tank when I have a full tank, or something like that, but usually it just sits near the E. I'm assuming the little floaty thing is just messed up or whatever, somehow, but I don't know how the hell to fix it. Anyone know anything about this? Would this be an easy DIY project, or even a cheap shop project, or is this gonna cost me hundreds of dollars in a shop. If it's gonna be a lot, I won't even bother but if it's easy it'd be nice to have fixed.

Any help would be appreciated. Thanks.