Help with gas gauge on 89 249!!!

[dvs954rr]

Hey guys, I have an irritating problem. My gas gauge on my cluster is acting up. After i filled up a full tank of gas, the needle still reads E. But every now and then. it moves up and down. I have tried to change the cluster over but still the same problem. Does anyone how or why its acting up. TIA.

[CaoBoY]

its the fuel gauge sender on your pump. pull it out, go to a junkyard and grab a new sender (you can just take the actual meter/sender assembly) and swap it real quick.