fuel gauge on 1993 Ford E-350

motorhome fuel gauge doesnt work...ford e350 chassis

by in North Las Vegas, NV on January 31, 2011
1 answer
ANSWER by on January 31, 2011
A few tests have to be made before a root cause can be determined. With the sending unit float arm in the empty stop position, resistance should be 15 ohms (below E). With the sending unit float arm in the full stop position, resistance should be 160 ohms (above F). The fuel gauge should read empty at 22.5 ohms and full at 145 ohms. These tests will isolate whether your concern is a sending unit wiring or a gauge.