Diesel Service

International Truck Repair in Austin, TX

LTs on the highway and MVs working local — including the older MaxxForce trucks other shops would rather not see.

International service at an independent Austin shop

International covers a lot of ground, from current A26-powered highway trucks to MV and DuraStar vocational units and the MaxxForce engines that earned a hard reputation. We take them on, and we tell owners honestly what a given truck is worth putting money into.

International models and drivetrains we service

  • LT series — Current highway tractors with A26 power and modern aftertreatment.
  • LoneStar & ProStar — The previous highway generation, still working hard — many with MaxxForce or Cummins power.
  • MV & DuraStar — Medium-duty box, service, and vocational trucks on local routes.
  • HV & WorkStar — Severe-duty and vocational chassis — dumps, mixers, and utility bodies that live off pavement.
  • CV series — The Class 4/5 trucks built with GM — a different animal from the heavy line, and often overlooked by heavy-truck shops.
  • International A26 — Engine diagnostics, aftertreatment faults, and repair on the current platform — a genuine improvement on what it replaced.
  • Cummins-powered Internationals — B6.7, L9, and X15 across the range. See Cummins repair.
  • MaxxForce (DT, 13, 15) — EGR-heavy engines with known emissions problems — diagnosed straight, no false hope.

What we see fail on International

  • MaxxForce EGR and emissions failures — The platform's known weak point: EGR coolers, valves, and repeated aftertreatment problems.
  • Aftertreatment derates — DPF loading and DEF faults that pull power on a loaded truck — DPF cleaning and DEF & SCR.
  • EGR cooler failure on MaxxForce — The one everyone knows about. Coolant loss, white smoke, and overheating — and a repair worth doing properly once rather than repeatedly.
  • Turbo and boost problems — Sticking vanes and leaks that show up first as poor fuel mileage.
  • Electrical and sensor faults — Intermittent codes that need live data instead of a parts list.
  • Air brake and chassis wear — Brakes, air leaks, and suspension found before a DOT inspection finds them.

International work we handle

  • A26 and MaxxForce diagnostics and engine repair
  • EGR system repair and aftertreatment service
  • DPF cleaning, DEF system repair, and derate faults
  • Air brake service and chassis repair
  • Medium-duty and heavy-duty preventive maintenance
  • Annual DOT/FMCSA inspections

Keeping a International on the road

  • EGR system attention on MaxxForce — This is the platform where deferred EGR work compounds fastest. Staying ahead of it is the difference between a truck that works and one that lives in a shop.
  • Fuel filters — A26 and Cummins injection both punish dirty fuel with four-figure repairs.
  • DPF cleaning on an interval — Ash accumulates regardless of how well the engine runs.
  • DEF quality checks — DEF degrades above ~86 °F, a temperature Austin clears for months at a time — so fluid stored in a yard drum can be out of spec well before its printed date.
  • Air dryer cartridge — Cheap, skipped constantly, and the reason moisture gets into an air system.
  • Brake and wheel-end checks at PM — Brakes are the top out-of-service category at roadside, every year.

Intervals depend on how the truck is worked, not on the odometer alone — see diesel truck maintenance schedules for how we set them, or fleet preventive maintenance if you run several.

The independent alternative to the dealer

International service in this market usually means the dealer network, and for an open recall or a factory warranty claim that is where the truck belongs. For everything else — A26 and MaxxForce diagnostics, EGR and aftertreatment work, air brakes, suspension, and DOT inspections — an independent shop is generally faster to get into and easier to talk to. That matters most on MaxxForce trucks, where the repair history is long and the value of a shop that will give you a straight assessment is high. When a job genuinely belongs at the dealer, we say so up front.

Modern Diesel is an independent, Christian, veteran-owned shop — we service International trucks but are not a dealer or affiliated with the manufacturer. Warranty coverage on our work is set with your service advisor at the time of service.

Related services

Other makes we service

Peterbilt · Kenworth · Freightliner · Volvo · Mack · Isuzu · Hino

Bring it to the shop

We work on International at our shop at 2900 N FM 973, Austin, TX 78725, serving the Greater Austin Area (Travis, Bastrop, Williamson, Hays) — Austin, Del Valle, Manor, Elgin, Pflugerville, Round Rock, and the surrounding counties. Call 512-717-2777 and tell us what it's doing, or send us the details and we'll get back to you.

Common questions

Will you work on a MaxxForce?

Yes. MaxxForce engines have real, well-documented EGR and emissions weaknesses, and plenty of shops avoid them. We will diagnose yours and give you a straight assessment — including when the honest answer is that the repair costs more than the truck is worth to you.

Do you service International MV and DuraStar box trucks?

Yes — medium-duty Internationals are common in local delivery and service fleets, and we handle their engine work, air brakes, preventive maintenance, and annual DOT inspections.

Is a MaxxForce worth keeping, or should I replace the truck?

It depends on the truck and what has already been done to it. The MaxxForce EGR-heavy emissions design earned its reputation, but a truck whose known weak points have been properly addressed can still earn its keep — and replacing a truck is a much larger cheque than fixing one. We will look at yours, tell you what it actually needs, and say plainly if the honest answer is that the money is better spent elsewhere.

Is the International A26 a better engine than the MaxxForce?

Yes, by general reckoning, and by ours. The A26 was a clean-sheet response to the MaxxForce emissions problems and has been markedly better in service. If you are running both, expect the A26 trucks to spend less time in a shop — which is worth knowing when you decide which units to keep.

Do I have to take an International to the dealer?

No. Diagnostics, engine and aftertreatment work, brakes, suspension, and DOT inspections are all independent-shop work and we do them. The dealer is the right call for open recalls, factory warranty claims, and certain proprietary programming — and we will tell you when that is genuinely the answer instead of keeping the truck while we find out.

Can you do the DOT inspection at the same time as repairs?

Yes, and it usually saves a trip. We can perform the annual DOT/FMCSA inspection and handle whatever it turns up in the same visit rather than sending you elsewhere to get it certified.

Book it

Ready when you are.

Drop by the shop at 2900 N FM 973, Austin, TX 78725 or call and we’ll get you scheduled.

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