houdel

I have one half of a yard stick under the seat also. I even calibrated it in gallons and then varnished it so I can get stick the tank and know exactly how much fuel I have left.

I did check, clean and recheck the fuel tank ground. I even used an ohmmeter to check the sender, forgot the exact reading, but it seemed about right for the amount of fuel I had in the tank. The fuel sender reads 0 ohms empty and 31.5 ohms full.

I'm pretty sure the problem is the fuel gauge itself. According to the diagnostic, you should have "battery voltage", 24-28V, on wire 28 when it is disconnected from the sender. Logic would dictate that since this is a direct lead to the fuel gauge, you should also have 24-28V at the pin on the gauge where wire 28 connects. I had 25V going into the gauge, a good ground from the gauge mounting stud to the chassis, but only 2.4V on the pin where wire 28 connects. Sounds to me like the guage is crap. Time to call Saturn!

Yes, I know how sensitive the Deuce is to grounding. When anything electrical starts acting odd, my first step is to check the ground. In a few cases I've even added a redundant ground just in case. Like on my turn signal flasher!