94 yr mod 12.7 det. Died on the road this am as if ign. Turned . off will not start back not fuel problem . any thoughts?
Look for ECM power fuses from the batteries first.
Power prob. Was my first thought. Have not checked it yet myself had it towed to yard
Should be 2 fuses. 1 for each set of 3 cylinders. If you lost 1 it shoulda kept running on 3. If you dont have any error codes, pull the sir compressor discharge hose off. Crank the engine and see if you get delivery. If the accessory drive fails you lose compressor and fuel pump. Dragged a lot of Freightliner off the highways for this common problem
My neighbor had this problem with a 12.7. Ended up being low coolant. Guess there is a shutoff switch for this? I don’t know if your problem is that simple, but you could check.
Will it crank, but just not start, like its out of fuel but you have fuel? Mine had a rubbed through wire behind the air compressor. I think its the wire that ran from ecm to crank sensor on the front of the engine.
I was able to bow out on this one .Turned it over to a shop that is supposed to have the talent & equip.to handle any Detroit prob. but yes it would crank but no go.
accessory drive link took a dive