OK, saw some posts about antislosh modules. I have a '91 base with no idiot light. Just installed a new pump. All works with no leaks, but now gauge reads FULL with only 2gal. Unplug tank to main wiring harness connector, and gauge still reads full. Would an older '91 base have such a module? I have very little time to correct this issue as I have shoulder surgery in a couple days. Might need to fix this later. Have to put car back together this afternoon and get it out of boss mans shop. Thanks.