Looks like the fuel gauge in my '77 D150 has finally died. As long as I can remember, it hasn't read more than 3/4, even when the tank is full, and empty at about 1/2 a tank. Now it's reading below empty regardless. I grounded the gauge sending wire (to the ground wire from the frame), and it bounced a little higher, but still settled back at the 3/4 mark. I pulled the IVR from the board, with no change. So I'm wondering if the IVR may be sketchy as well as the sending unit in the tank......
Fuel gauge only going to 3/4 when grounded?
