Cummins Diesel Repair in Angola, IN (Light & Medium Duty Trucks)
Diagnostics • Drivability • Fuel System • Turbo/Boost • Cooling • EGR & Aftertreatment Support
Cummins-powered trucks are built to work—but even the toughest diesel needs the right diagnostics and maintenance to stay reliable. At Lonsbury Garage in Angola, IN, we provide professional Cummins diesel diagnostics and repair for light and medium duty trucks. If you tow, haul, plow, or rely on your truck for work, we focus on accurate testing and repairs that solve the root cause—so you spend less time chasing repeat issues.
Common Cummins Problems We Diagnose
If you notice any of these symptoms, schedule a Cummins inspection:
- Check Engine light or warning messages
- Hard starting, long crank, or rough idle
- Loss of power, reduced throttle response, or limp mode
- Smoke (black/white) or strong diesel odor
- Poor fuel economy or frequent regen events
- Turbo/boost concerns (underboost/overboost codes, whistle, lack of pull)
- Overheating, coolant loss, or heater performance changes
- Fuel, oil, or coolant leaks
Cummins Diagnostics That Prevent Guesswork
Modern diesels rely on sensors, control strategies, and emissions systems that require accurate testing. Our diagnostic approach may include:
- Computer scan for Cummins-related fault codes and data
- Live data review to confirm fuel, boost, and temperature behavior
- Visual inspections for leaks, damaged wiring, and worn components
- Boost and intake system checks for leaks and restriction concerns
- Cooling system testing for pressure loss, flow, and operating temperature
- Road test verification under real-world load (when appropriate)
Fuel System, Turbo & Drivability Repairs
Power loss and drivability issues often trace back to air/fuel balance, boost control, or sensor accuracy. Depending on your truck and symptoms, service may include:
- Fuel supply and pressure diagnosis (delivery and control concerns)
- Turbo/boost diagnostics (boost leaks, control/actuation issues as equipped)
- Intake system inspection (boots, clamps, charge air plumbing)
- Sensor and wiring diagnosis (MAP/boost, temperature sensors, related circuits)
- Repair planning focused on fixing the cause—not guessing parts
Cooling System Service for Work Trucks
Towing, heavy loads, and commercial use can expose weaknesses in cooling systems. If you’re seeing high temps or coolant loss, we can inspect and test the system and recommend repairs to keep your Cummins operating at the right temperature.
Emissions & Aftertreatment Support (As Equipped)
Many Cummins-equipped trucks include aftertreatment components that affect drivability and regeneration behavior. If you have DPF lights, frequent regens, or exhaust-related codes, we can diagnose contributing issues such as sensor faults, exhaust leaks, and operating conditions that prevent successful regeneration.
Cummins Repair Near You
If you’re searching for Cummins repair near me, Cummins diesel diagnostics in Angola, IN, or light and medium duty truck diesel repair, call (260)665-5165. We’ll schedule an inspection, confirm the cause, and help get your truck back to dependable service.
Cummins Diesel FAQs
Why does my Cummins feel weak or slow to build boost?
Common causes include boost leaks, sensor errors, turbo control/actuation concerns (as equipped), restricted airflow, or fueling issues. We confirm the cause using scan data and testing before recommending repairs.
What causes frequent regeneration on a Cummins?
Frequent regens can be caused by operating conditions (short trips/idling), exhaust leaks, sensor faults, or engine performance issues that create more soot. A proper diagnosis identifies why soot load is building quickly.
Do you work on trucks used for towing and commercial work?
Yes. We understand downtime matters. We focus on accurate diagnostics, clear recommendations, and repairs that support reliability for hard-working trucks.
