fuel guage

My 92 prix 3.1 fuel gauge moves around alot when driving..is this normal?like it will go from a 1/8 variance all the time....never know where i am at for sure ..very frustrating ..as far as fuel mileage goes...is it the sender? is there anything u can do to fix this

is this when your driving straight on level ground or stoping, accellerating and turning? my 92 did the same thing, moving when turning and such only

More so while I am turning or taking off and stopping but also does it just as ai drive normal down a level road too....sometimes for example will read 1/4 tank then all of the sudden will read a 1/8th or will go the other way to read higher than what it just showed too...same as when the tank is fuller too....Is there a way to replace the sending unit without dropping the tank? maybe cut a hole in the trunk area,lol for a access cover then?