I have an 84 300zx n/a with a digital dash. Everything works exept for the bars on the gas gauge, does anyone have any thought or suggestions on why they aren't showing up. When I do the self diagnostics they work, but after the that is done they don't work. Help please. Thanks.

 

probably the fuel level sending unit. Usually, if the diagnostic mode works, then it isn't the power supply or the instrument cluster. Repalce the FLSU and it should work.