I have a set of Van's fuel gauges in a Murphy. They are not accurate at all. I'm in the process of filling the tank one gallon at a time and taking resistance measurements as I fill. It appears the sending units are working correct when I drained the tank. Resistance went up from around 30 ohms to 250 ohms.
I've verified the wire from the sender is good and the sender is grounded good.
When the sending unit wire is hooked up to the gauge and power is off, resistance is good through the sender. When I turn power on the resistance goes to zero.
I did not build this, in the process of buying it.
I've verified the wire from the sender is good and the sender is grounded good.
When the sending unit wire is hooked up to the gauge and power is off, resistance is good through the sender. When I turn power on the resistance goes to zero.
I did not build this, in the process of buying it.
Attachments
Last edited: