WildcatFord
New User
I have a 6 V POS GND Ford 641 with a recently replaced fuel gauge and sending unit. When it hasn't been run for a while, the fuel gauge will indicate appropriate level when the switch is turned ON. Once started and running, the needle tends to bounce around and eventually the gauge stops indicating the fuel level completely. This happened yesterday, and I just confirmed that the gauge will not work with the switch on tonight.
I read a reasonable resistance (about 35 ohms) between the sending unit terminal and GND when the switch is off. I used a jumper wire to make sure the fuel tank was grounded, and no change was noted.
Anyone have any ideas on what would cause this behavior with the fuel gauge and sending unit?
I read a reasonable resistance (about 35 ohms) between the sending unit terminal and GND when the switch is off. I used a jumper wire to make sure the fuel tank was grounded, and no change was noted.
Anyone have any ideas on what would cause this behavior with the fuel gauge and sending unit?