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+--- Thread: Mx13 head scratcher (/showthread.php?tid=10388)
Mx13 head scratcher - Perro903 - Yesterday
2016 t680.mx13
New customer asked if I could look at truck, sure why not. Pulled up, hooked up and retrieverd code. Many random codes. I clear codes and some of the previous come up and then some new ones. Every time I clear code new codes come up and some of the old ones go away then come back up later. The craziest part is there is no CEL only calling for a Regen. The egr has been blocked off but I do not know if it's "tuned" for it. I do not know the history of this truck. When I checked voltages and resistance on wires, from ecm and out of ecm, to the first sensors I got codes for (egr temp, temp after bpv, oil temp, and humidity) they checked out fine. After clearing couple of times those went away just to get a new set of sensor faults (coolant level, coolant temp, oil pressure, can communication on bpv, scr temps). Did nothing but reset fault. Maybe the ecm go bad?
RE: Mx13 head scratcher - mikkhh - Yesterday
Most if not all "tune" "mandate removal" solutions on those MX13 are plain garbage!!!!!!
First step to get it fixed and running properly look up how much for new dpf doser, new scr doser, new dpf/scr cans . If price for those is acceptable then have ecm reflashed to stock and then see what is actually wrong.
Remove all those blank off plates, fit new OEM back pressure sensor, boost pressure sensor, dpf differential sensor and have egr cooler cleaned/washed, clean intake with vacuum and it should work or at least show codes.
It is very common for newer MX13 engines to spin injector pump cam lobes even et 150 000miles. If they have fuel pressure fault codes do not replace pumps as a first step, remove pump and cups that ride on cam and look for wear. I usually like to warn beforehand about things that may be wrong, way better than other way of bad new that keep coming and coming.
RE: Mx13 head scratcher - Perro903 - Yesterday
I didn't have any fuel sensor faults. Oil pressure to low, temp sensor after BPv shorted to high, oil temp sensor shorted to high, can communication bpv slow. Mostly temp sensors shorted to high. I check wiring to each sensor flagged test points at the sensor, from ecm, to ecm, voltage and resistance with and without load and put a resistor across the to trick ecm to read sensor but nothing changes in the live view.
RE: Mx13 head scratcher - mikkhh - Yesterday
For the MX's, Sadly there is no proper deman solutions out there for those. All your problems could be due to the programming that is made by somebody. Only proper solution for those as of now is to fix the mandate and keep it running stock. It has got ecm + acm (mounted on cans). ACM is made by red engine manufactirer and also other parts of emissions system too are designed by red engine company. Dpf dosers etc.
If just the cans had been gutted then outcomes might be little better. But full "solutions" like block off plates are absolutely terrible with their programming.
There is no silver bullet in acm either, absolutely no way to turn those things off there...
RE: Mx13 head scratcher - Perro903 - Yesterday
10 4. That's the way I'm leaning because I don't know for sure it's programed for demandate. I found the block off plate at the end of my work on it. It was 1 am and I was ready to get to bed so didn't dig deeper. He just asked if I could look at it because if it was to much he was just going to sell the truck. I found some burnt wires caused by an exhaust leak so figured that was majority of the problem but nahhhh. I'll have to call customer and see all that was done to that truck . Thanks for the responses