Over the last couple months, my gas gauge ('98 Passport) has been acting weird . . . sometimes when I fill my tank, the gauge only registers 1/2 to 3/4 full. Even though I know it's really full. I have tried different pumps thinking that maybe there was just a problem with the "cut off" to stop overflow, but it doesn't seem to matter where I fill up. Sometimes the gauge works fine and shows the tank is topped off.
Has anyone else ever experienced this?