Cummins 6.7L Diesel Repair
Fuel systems, turbo, DPF, emissions, CP4 pump, VGT actuator, and EGR diagnostics for your Cummins 6.7L.
Auto Repair in Louisville, KY | Diesel & Diagnostics Specialists
Arian Auto Club Repair — Precision diagnostics before repair.
Auto Repair Services in Louisville, KY
Arian Auto Club Repair handles Cummins 6.7L diesel repair, ECM programming, advanced diagnostics, and electronic fault tracing. Every diesel, gas, European, Asian, or domestic vehicle starts with an electronic and mechanical assessment. Our workflow is simple: diagnose first, estimate second, fix third, verify fourth. We do not replace parts from a code alone.
Advanced Diagnostic Services
Check engine light, CAN bus, electrical faults, no-starts, and intermittent drivability issues diagnosed with dealer-level tools.
ECM, TCM & BCM Programming
Module programming, calibration updates, injector coding, and replacement module setup for all makes.
Electrical Troubleshooting
Wiring, parasitic drain, sensor diagnostics, charging systems, and hard-to-trace electrical faults.
Engine Rebuilds & Major Repairs
Engine diagnostics, internal repair, compression testing, head gaskets, and major repair planning.
Transmission Diagnostics
Slipping, hard shifts, sensor faults, fluid issues, and electronic transmission diagnostics for all vehicles.
Fleet Maintenance
Preventive maintenance, diagnostics, and repair support for Louisville fleet operators and commercial trucks.
Domestic & Imported Vehicles
Diagnostics and repair for domestic, European, Asian, diesel, and gas vehicles using factory-level software.
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Serving Louisville, Jefferson County & Southern Indiana
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Stop Guessing. Start Diagnosing.
Modern vehicles run on complex electronics. Without advanced diagnostic equipment and expertise, shops guess — and you pay for it.
Call (502) 295-7627Frequently Asked Questions
I already took my truck to another shop and they replaced parts, but the check engine light came back. Why would your diagnostic be any different?
Most shops read a code like "P0087 — Fuel Rail Pressure Low" and replace likely parts. We use Autel MaxiSys, Chrysler wiTECH, Ford FDRS, or GM GDS2 to review live data, freeze frame, and system behavior. On a Cummins 6.7L, we compare fuel rail pressure actual vs. commanded, injection timing, and CP4 pump output before quoting parts.
My check engine light is on, but the car drives fine. Is it actually a problem or can I wait?
It depends on the light and stored code. A solid amber light may allow limited driving, but the ECU has detected a value outside expected range. A P0401 on a Cummins 6.7L can point to EGR flow issues that become more expensive over time. If the light is flashing or red, stop driving and get it towed.
I brought my car in for a repair quote. How do I know it won't end up costing double?
We quote from diagnostic findings, not a guess. If we diagnose a bad EGR cooler on your Cummins 6.7L, the estimate covers the cooler, gaskets, labor, coolant, and common related needs. If we find something unexpected, we stop, document it, photograph it, and call you with an updated estimate before additional work. ---