Fuel sending unit maybe?? Is that difficult to replace?

 

If your car's an '86 like I see in your sig. then the problem is finding the sender itself. But it can be rebuilt, that's what I did to mine.

And while you're there you may want to change the fuel pump, new filter, the sender, and the tank itself all at once, that's what I did.

 

Yea its an 86..wheres the sender at And what is needed to rebuild it? Thanks!

 

The fuel level sending unit is inside you gas tank. And the reason it needs to be rebuilt is because the '86 is unique on its own, it was a one year only desing and it can not be found new.

But fortunally there is this place.
http://www.fuelsender.com/

They did mine, and came out like new.