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International Diesel Diagnostic Specialists

Expert remote diagnostics for MaxxForce and A26 engines. Comprehensive Navistar/International support from certified diesel technicians.

Engines We Support

MaxxForce DT

Medium-duty workhorse engine for International DuraStar/4300 series. Known EGR cooler challenges with proven diagnostic solutions.

MaxxForce 13

12.4L heavy-duty engine with advanced EGR system. Found in ProStar and LoneStar models requiring specialized diagnostics.

MaxxForce 15

14.9L big-bore engine for heavy-haul applications. Shared platform considerations with Cummins ISX architecture.

A26

Navistar's latest 12.7L engine platform for the International LT Series. Modern SCR-only aftertreatment with improved reliability.

N13

12.4L transitional engine bridging MaxxForce 13 to A26 technology. SCR aftertreatment with Cummins-derived components.

Common International Issues We Solve

EGR Cooler Failures (MaxxForce)

Notorious MaxxForce EGR cooler cracking and coolant loss. Diagnostic procedures, leak testing, and replacement guidance.

Aftertreatment Problems

SCR efficiency derates, DPF regeneration failures, and DOC degradation across MaxxForce and A26 platforms.

High-Pressure Fuel Pump

HPFP failures causing low rail pressure, hard starts, and power loss. Common on MaxxForce DT and 13 engines.

DPF Regeneration Issues

Failed forced regen attempts, high soot load conditions, and HC doser problems preventing successful DPF cleaning cycles.

SCR System Failures

DEF dosing unit problems, NOx sensor faults, and SCR catalyst efficiency issues causing progressive derate conditions.

Our International Diagnostic Services

Remote Diagnostics

Live remote sessions using ServiceMaxx/Navistar OnCommand for real-time fault code analysis, data logging, and guided MaxxForce/A26 repair.

ECM Programming

Remote ECM calibration updates, parameter changes, and module replacement programming for International/Navistar engines.

Bench Harness Testing

International-specific bench harness for ECM and module testing. Isolate electrical faults efficiently outside the vehicle.

Training & Support

International/Navistar diagnostic training covering MaxxForce-specific issues, A26 systems, and ServiceMaxx software operation.

Recommended Tools

International Bench Harness

Dedicated bench testing harness for International/Navistar ECMs. Test MaxxForce and A26 modules outside the vehicle.

Nexiq USB-Link 3

RP1210 adapter compatible with ServiceMaxx and Navistar OnCommand. Essential for International diesel diagnostics.

International Resources

Need International Diagnostic Help?

Our certified technicians are available for remote diagnostics and expert International engine support.

Contact Us Now Call (800) 697-7626

Other Engine Platforms We Support

Cummins

ISX15, X15, ISB 6.7, and ISL engine diagnostics. ECM programming, aftertreatment repair, and INSITE remote support.

Detroit Diesel

DD13, DD15, DD16 diagnostics. MCM/CPC troubleshooting, turbo actuator calibration, and one-box aftertreatment repair.

PACCAR

MX-13 and MX-11 engine support for Kenworth and Peterbilt. Davie4 diagnostics, HC doser repair, and ECM programming.