I just bought a 2002 dodge 2500 cummins quad cab. The fuel gauge was not working. It was stuck below E with fuel light on. Took it to local shop and they said need new sender. Looked on here and found the correct part number. Thank you. Shop installed and gauge still not working. Shop tested wires and said they are sending signal all the way to the PCM. After that they don't know. I looked on here how to test cluster with the trip button. The gauge moved as it should. I brought truck home and need to know where to look next. Thank you.

I will try to get the OHMs from a new one that I have in my garage tomorrow for you.

Sorry to bring up an old thread but did you ever find out what was wrong with it? I am having the exact same problem,  except when I test the pins on the plug that goes into the plug on the tank I get 11.49v, New sender ohms out properly but having the same issue as op. Any help would be much appreciated. 

Tested on 2000 Dodge Durango PCM, 20 ohms - full <-> 240 ohms - empty

 

@ 10 to 0 Ohms, short-circuit            @ 0.40v to 0.00v

@ 20 ohm full                                     @ 0.55v       100%
@ 179 Ohm, Fuel Reserve Light on   @ 5.95v        17%
@ 180 ohm, before the low fuel light  @ 6.00v        16%  
@ 220 Ohm nearly empty                   @ 7.00v          2%
@ 240 Ohm empty.                             @ 7.30v          1%

@ 1Kohms to ∞ infinite resistance Ohms, open-circuit 10.00v+    MAX 

 

Voltage       Tank% 

@ 0.55v      100%

@ 1.00v        95%

@ 2.00v        77%

@ 3.00v        63%

@ 4.00v        48%

@ 5.00v        33%

@ 6.00v        16%  

@ 7.00v          2%

@ 7.30v          1%

Edited March 1, 20187 yr by Chris O.