We repair Volvo and Mack ECMs: Volvo D11, D12, D13, and D16, and the Mack MP7, MP8, and MP10 that share the same module family. Injector drivers, communication loss, and oil intrusion are the ones we see most. If your ECM is doing one of these, we have likely fixed the same thing this week.
These show up across these ECMs week in and week out. If your symptom is on this list, that is good news. It means we have seen it before and it is fixable.
What you see: a dead bank or a single injector electrical fault, a misfire, or a rough run that follows the ECM.
What's happening: a failed injector-driver output circuit inside the module, often after a harness short took the driver with it.
What we do: we rebuild the driver circuitry and bench-test every injector channel before it ships back.
What you see: the ECM drops off the J1939 bus, will not talk to your tool, or the truck goes to a no-start.
What's happening: the internal communication or power section of the module has failed. We separate that from harness corrosion so you fix the right thing.
What we do: we restore the communication and power side on the bench so it can be read and programmed again.
What you see: intermittent faults that come and go, corrosion on the connector, or a unit that acts up after a wet or oily season.
What's happening: the injector harness pass-through can leak oil into these units and moisture corrodes the board, a known weak point on this family.
What we do: we clean and repair the corrosion, rebuild the affected areas, reseal the unit, and bench-test it before it ships.
Don't see your exact symptom? Send it in anyway. These are the common ones, but these ECMs fail in other ways too, and we test every unit before we tell you what is going on.
Self-ship free, or add a prepaid UPS label. Drop-offs in Princeton, MN by appointment.
$350 bench fee, credited toward the repair. We test it and tell you exactly what failed, usually in 1-2 business days.
Injector driver repair, communication restoration, corrosion and intrusion repair, whatever it needs. Standard turnaround 3-5 days on the bench.
Programmed to your engine, bench-tested, and backed by our repair warranty. Plus 1-3 days return shipping.
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"Mike does great work and sent my repaired ECM back to me right away. Saved me thousands of dollars vs. using the dealer. Would recommend to anyone that needs prompt repair."
"From ECMs and harnesses to straight-out cutting counter bores in-frame for us. Great shop — and a great person to have in your pocket."
"Highly recommend these guys! Fast turnaround — I had my ECM back and repaired by the next day. Will definitely do more business in the near future."
"Michael is a diesel guru. He made my rig scream and had it done when he said, for the price we agreed to. I'd highly recommend him."
"Mike is highly knowledgeable in all areas of diesel repair — from mechanical work to advanced electrical diagnostics. You can count on him to get the job done right."
"Mike is a very professional and skilled mechanic. I highly recommend him for any of your needs."
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