I also am having the same issue and its driving me nuts. I was told its supposed to work. I just picked up another 96 pump hoping that's the problem. ill try and check my tank again to see it I need to clip more. The gauge reads empty when I'm full and when the tank is half empty it reads full. Then as it reaches half empty I'm at empty. So far every 200 miles I just fill up. I have a 99 xj harness.Just wish it worked. Once again awesome build.