The fuel gauge of my 2003 XKR was stuck on full.
The fuel pump module (C2N1147), which integrates the float and sender unit in one module, was replaced with a brand-new one a few years ago.
Isn't there any alternative other than replacing the new fuel pump module again?
Or any other cause of the trouble? All ideas or suggestions would be welcome.

 

Usually reads full if the sender wire gets trapped to earth. I would take it out ..check float moves OK and check if resistance varies on the sender wire .
There is another post on this lower down