What issues do you see in your fuel system?
I've been researching some of the known and documented fuel issues with these vehicles, and i'm curious how many of you deal with any of them.
There are three independent issues:
1) Low fuel light comes on with 4-5 gallons left, instead of the 2 or so where it should. Caused by the sending unit being miscalibrated. Fixed by replacing sending unit.
2) Fuel gauge reads erradic. Caused by a faulty levelling circuit on the #3 dash panel PCB. Fixed by replacing this PCB. Somewhere I've read that the levelling circuit can be hacked and the gauge work properly, although the details of what precisely got hacked are vague. If you remove the dash panel, the levelling sensor itself is the white plastic thingy mounted on the back side with 3 small wires connecting to the gauge PCB.
3) Fuel tank capicity limited to 15-16 gallons due to the filler tube extending into the tank too far.
My rig suffer from #3. I stumbled across this fact today, which was news to me. But i've been asking around if anyone else has a 15 gallon fuel tank for months. Turns out this is the culprit.
Anyone else see any of these in their rigs?
-Jason
I've been researching some of the known and documented fuel issues with these vehicles, and i'm curious how many of you deal with any of them.
There are three independent issues:
1) Low fuel light comes on with 4-5 gallons left, instead of the 2 or so where it should. Caused by the sending unit being miscalibrated. Fixed by replacing sending unit.
2) Fuel gauge reads erradic. Caused by a faulty levelling circuit on the #3 dash panel PCB. Fixed by replacing this PCB. Somewhere I've read that the levelling circuit can be hacked and the gauge work properly, although the details of what precisely got hacked are vague. If you remove the dash panel, the levelling sensor itself is the white plastic thingy mounted on the back side with 3 small wires connecting to the gauge PCB.
3) Fuel tank capicity limited to 15-16 gallons due to the filler tube extending into the tank too far.
My rig suffer from #3. I stumbled across this fact today, which was news to me. But i've been asking around if anyone else has a 15 gallon fuel tank for months. Turns out this is the culprit.
Anyone else see any of these in their rigs?
-Jason
Last edited: