Anyone know which def heater lines are which on international? I got a def heater line 2 code and I did the plug and unplug method to see which one would stay and which two would clear. The inlet line is what it points to but I figured I would ask to make sure
Def heater lines
Discussion in 'Heavy Duty Diesel Truck Mechanics Forum' started by CrimsonPatriot, Feb 4, 2021.
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Model/year/engine........
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Cummins set up is #1 = pressure , #2 =suction and #3 is return.
So I would say you are correct. Should be from tank to pump inlet.Flint1, QUALITYTRUCK and Fieldrat Thank this. -
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Goody snap is right I believe.
Goodysnap Thanks this. -
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