My fuel gauge started showing way above full all the time. As soon as I turn the key the fuel gauge reflects over the full pointer. I remove the gauge from the dash and tested it in a stand alone environment. The results are attached. To get the full reading I put 12 vdc as follows pos to the I (input) and neg to G (ground) middle post. To get the empty reading I jumped across the S (signal) to the Ground.
I have attached screen shots of the full and empty readings. The full is what my fuel gauges looks like all the time in the coach.
Would this indicate a bad gauge? There is a resistor between the I and the S don't know what the value should be and if that has gone bad somehow. Honestly I would love this to be my problem as opposed to dropping the fuel tank and changing the sending unit.
Joe/1997 Sahara 3550/3126/6 Spd