Morning all,
The fuel sender unit on my 66 500 is really confusing me as it triggers the Fuel warning light on the dash even when the tank is full.
I have bench tested the sender unit using a continuity meter and it works correctly, completing the circuit when the float is at approx. ¾ drop. Using the test circuit during installation, (fuel tank is full) the circuit is correctly broken as the sender is inserted into the tank, however as soon as the sender unit body flange touched the tank sender mounting threads, somehow a circuit completes that will then trigger the warning light.
Am I missing something or have a fundamentally misunderstood how the sender works?
The fuel sender unit on my 66 500 is really confusing me as it triggers the Fuel warning light on the dash even when the tank is full.
I have bench tested the sender unit using a continuity meter and it works correctly, completing the circuit when the float is at approx. ¾ drop. Using the test circuit during installation, (fuel tank is full) the circuit is correctly broken as the sender is inserted into the tank, however as soon as the sender unit body flange touched the tank sender mounting threads, somehow a circuit completes that will then trigger the warning light.
Am I missing something or have a fundamentally misunderstood how the sender works?