Question about 1993 Dodge D150
FUEL SENDING UNIT IN THE FUEL TANK FAULTY.THE FLOAT ARM ATTACH TO SENDING UNIT.THE FUEL SENDING IS A RHEOSTAT WITH ELECTRICAL CURRENT FLOWING TO IT.YOU HAVE A COIL OF RESISTANCE WIRE IN RHEOSTAT.WHEN FLOAT+ ARM RISE WHEN PUMPING MORE FUEL IN TANK THIS CAUSE MORE CURRENT FLOW THROUGH COIL FROM RHEOSTAT TO FUEL GAUGE WHICH CAUSE FUEL GAUGE MOVE TO FULL MARK.WHEN FUEL LEVEL DROP THE FLOAT + ARM DROP CAUSE LOW CURRENT THROUGH RHEOSTAT COIL WIRE IN WHICH CAUSE FUEL GAUGE NEEDLE TO DROP SHOWING LOW FUEL LEVEL IN THE FUEL TANK.
Posted on Nov 06, 2010
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Posted on Jan 02, 2017
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