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I was just able to take some time and read through this article on the 8.2. A really good article. Did many of you guys work on these? It says the injectors where hard to set, any experience? Did you ever see many medium trucks buses, or boats with them? The one I saw was in a road grader. I had heard about them but did not think I would ever see one because they all where in the junk yard!
It sounds like you may have a hydraulic pressure problem. I would try to check the forward and reverse pressure out of the pump and compare them. Then you would be able to see way it is not moving and just determine if it is a pump problem or an electrical problem. Are your voltage readings at the valve coils? If they are that reading may not be right because the coils are usually PWM so your meter is just reading average voltage. You need to check duty cycle or look at it with a scope.
I replaced the DEF header today and that seemed to take care of the code 3516-11. I still need to code the injector and force a regen. I am still having trouble doing that with my Diesel Laptop. Have reached out to them about why it will not do those two things. The following CAN buss codes are coming up some times and I have never seen them before: 523548-2 523591-2 523592-2 523620-2 Not sure what to think about these. They would clear out but would come back after a little bit. It seemed like I would notice them after I tried to force the regen but maybe not always. Could this be keeping me from forcing the regen?
One thing I have learned with this job so for is, whenever you have electrical problems it is good to spend some time just looking over the wiring harness. On this one I could have fixed about half of the problems without even using the DMM or hooking up a computer.
Just want to give an update on how this job is coming. Code 651-3 The number 1 injector coil was open. Replaced the injector and now it is hitting on all 4. Code 2685-8 and 2686-8 These were caused by a torn up wire harness from the track motor to inside the frame. I replaced the harness and the code had cleared by the time I had backed it out of the shop. Code 358-5 This was because the Implement Control Solenoid was unplugged. Code 598-5 This was because the Travel Speed Solenoid was unplugged. Code 458-3, 3700-3 and 350-3 These where all because the wiring harness that goes up the right loader arm was damaged badly. I repaired it by putting new wires in it all the way from plug to plug. I should have just replaced the harness but I thought I would save some money. The wiring harness from the arm to the quick tach was bad to so I replaced it also. Code 3516-11 I did not have this code at first. I think it is the DEF header that is bad. The DEF fluid test ok and the wiring checks ok. Just have to get the header. Code 3701-16, 3701-15, E1239-3, and E1239-2 These are all codes because it needs to regen. I have not been able to force it to regen yet but I hope that is just because the DEF header is bad and once that is replaced it will regen.
Computers can process a huge amount of data quickly but they can not see, hear, taste, smell, or feel like a human. They can not anticipate everything that could ever go wrong in real world conditions. What will it do when a mouse gets in and chews some wires? Will it just start running full speed ahead and run over a school bus full of kids? I am not a fan of AI or autonomous at all. Can they get it work in the lab? Yes. What kind of nightmares will it create in the field after a while?
I would definitely put fresh fuel to it and new fuel filters. The fuel has to be nasty. Then I would wait for an answer for the experts, I don’t have much experience with them yet. Glad you are trying to save a piece of old iron and a Detroit to!
I like what Simon C said. I’ll add, it is always good to get real numbers and not to assume it is right. The numbers will tell you alot and give you something to go off of. Open circuit battery voltage, charge voltage, ground voltage drop, ect. I don’t mean to preach it’s just really important.
