Pro Truck Shop specializes in Volvo semi trucks—VNL/VNR with D13 engines and I-Shift automated manuals.
From drivability and fuel-economy complaints to aftertreatment and shifting faults, our Volvo-savvy techs deliver accurate diagnostics and reliable repairs at our Mt. Crawford shop, with roadside help across the Shenandoah Valley (Winchester to Roanoke).
D13 engine issues: injector cup leaks, VGT/boost problems, EGR cooler faults, power loss, smoke, overheating.
Aftertreatment faults (DPF/DOC/SCR): failed regens, DEF/NOx sensor errors, 5-mph derate, “SCR performance low.”
I-Shift transmission problems: clutch actuator failures, limp mode, harsh shifts, communication errors (e.g., MID 130/FMI).
D13 diagnostics (fuel/injectors, turbo/VGT, EGR, cooling, CAC leak tests)
Aftertreatment service: sensor testing, DPF cleaning, DEF/SCR diagnosis, regen support
I-Shift repairs: clutch actuator, software calibration, harness/TECU checks
Electrical & CAN diagnostics, no-start/derate triage
Preventive maintenance per Volvo maintenance intervals (oil, filters, valves, coolant)
Follow Volvo’s recommended intervals (oil/filters, valve sets, coolant, belts) and adjust for idle time and duty cycle to prevent faults that trigger derates and downtime.
Injector cup leaks, VGT nozzle/actuator issues, and EGR cooler failures are frequent; we test cooling system pressure, inspect injectors, and verify boost control to fix root causes.
Often, yes. We scan, check DEF/NOx sensors and DPF differential pressure, correct DEF quality problems, and perform targeted regens/repairs to clear derate safely.
Clutch actuator faults, calibration drift, or wiring/TECU communication errors are common; we test actuator, update/calibrate, and repair harness/connectors.
Use Volvo intervals and step down for high idle: oil/filters roughly every 55–60k miles; valve set at ~150k then every 300k; coolant at ~750k/96 months. We tailor plans to duty cycle.
Yes, contaminated fuel/DEF is a common trigger for SCR performance faults and failed regens. We test quality and clean/repair affected components.
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