Hi. My fuel gauge decided to stop working after I pulled out the computer of my 1980 cutlass supreme. I'm doing a 350 swap from the old v6 so I didnt see a need in the computer. But then as I was running the v6 for the last time, I ran out of fuel. But my fuel gauge said I still had ab a third of a tank left. Could my gauge not be working because I pulled the computer? Or is the sending unit bad? Because I dont know if the gauges in that car were computer controlled.