So far..nothing wrong with mine...it just likes to drop from FULL to EMPTY rather fast with my thirsty engine!
I believe someone else posted a VERY similar problem such as yours...try a search on this and see what you find. I can't remember the dates..but do remember the problem.
Best of luck!!
2000 F-150 XLT, 4x2, 5.4L Supercab, Styleside, Black with silver two-tone, 3.55, class III towing package with heavy duty cooling package, 4 wheel disk ABS, overhead console, sliding rear window, keyless entry, dark graphite interior, in dash CD, Pendaliner bedliner, K&N air filter, rubberized undercoating, cabin filtration system, Bugflector II, 5W-30 Mobil 1, engine build 10/4/99