Volvo & Mack
Volvo's D-series and Mack's MP-series share architecture — Mack engines are effectively built on the same platform — so they share failure patterns too. EGR valve sticking and DPF/DOC degradation are the two we watch for most.
- Displacement
- 10.8L / 12.8L / 16L (D11/D13/D16) · 11L / 13L (MP7/MP8)
- Common in
- Volvo VNL, Mack Anthem, Pinnacle
Known failure signature
- EGR valve sticking — common across the shared Volvo/Mack architecture
- DPF/DOC degradation over time, worth checking whenever either component is serviced
- Mack MP7/MP8 shares these same failure modes given the common Volvo-derived architecture
Services we perform on this platform
EGR Valve & Cooler Repair
White smoke at startup and coolant that disappears without a visible leak is the classic sign of a cracked EGR cooler letting coolant cross into the exhaust. We pressure-test the cooling system to confirm it before anything comes apart.
Learn more Emissions
DPF Cleaning & Forced Regen
When soot and ash load up faster than the truck can burn them off, regens get longer, power drops, and eventually the ECM derates you. We clean, diagnose, and force-regen on site — and tell you honestly whether the filter can be saved or needs replacing.
Learn more Emissions
Engine Derate Diagnosis & Repair
A derate means the ECM has decided the truck can't be trusted to run at full power — pull over safely, don't keep pushing it, and call. We read the fault code, trace it to sensors, DEF quality, or the aftertreatment system, and get you back to full power instead of just clearing the light.
Learn more Engines
Diesel Engine Repair
A diesel engine problem is rarely simple — it's cylinder head, fuel system, turbo, or something deeper, and the fix ranges from a single component to a full overhaul. We diagnose first, then tell you honestly whether it's worth repairing, overhauling, or replacing.
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Diagnostic tools we use
Common questions
Are Volvo and Mack engines really that similar?
Yes — Mack’s MP7 and MP8 share the Volvo-derived architecture, so they see the same failure modes.
What's the most common issue on the D13?
EGR valve sticking, and DPF/DOC degradation over time. We check both on any D13 or MP8 visit.
What diagnostic tool do you use?
Volvo Premium Tech Tool for Volvo/Mack, plus JPRO for cross-platform work.
Do you work on Mack Anthem and Pinnacle models?
Yes.
Ready when you are
Call now or send a quote request — we’ll tell you what it takes to fix it.