help needed fluctuating gas gauge

[stackbluefaces]

i changed the sender unit twice already and still getting the same problem . its a b14 with a qg18 enegine

[matix]

Try cleaning or replacing the filter in the gas tank if there's one.

[rmrunner]

Could be the level indication on the cluster. Take it out and see if there are any loose wires, also check the harness on the sender side in case any wire has an opening and touching the body