Never do resistance readings with current flowing through the
wire. Resistance is measured with the key off, voltage with key on.
BillL
At 10:46 AM 5/11/2008, you wrote:
If you put an ohm meter between the lead from the gauge to the
sending unit you should get a reading between 0 and 90 OHM with the
ignition on. 0 would be an empty tank 90 a full tank . Using a
floor jack lower and raise the back of the car. If you get different
readings the sending unit is good. If this fails check the ground to
your instrument cluster. There should be 12 volts to the other side
of the gauge.
Jim
