Custom T Repair


Medium/Heavy Duty/Semi Truck Repair, Construction & Farm Equipment Repair in Springfield, AR and Surrounding Communities

OUR SERVICES

OUR SERVICES

  • Semi Truck Repair
  • Heavy Duty Truck Repair
  • Medium Duty Truck Repair
  • Commercial Truck Repair
  • Construction Equipment Repair
  • Farming Equipment Repair
  • Backhoe/Bulldozer/Tractor Repair
  • Diesel Engine Repair
  • Semi Truck Maintenance
  • Semi Truck Chassis Repair
  • Semi Truck Transmission Repair
  • Semi Truck Brake Repair
  • 24/7 Roadside Semi Truck Repair
  • Semi Truck Repair
  • Heavy Duty Truck Repair
  • Medium Duty Truck Repair
  • Commercial Truck Repair
  • Construction Equipment Repair
  • Farming Equipment Repair
  • Backhoe/Bulldozer/Tractor
  • RepairDiesel Engine Repaira
  • Semi Truck Maintenance
  • Semi Truck Transmission Repair
  • Semi Truck Brake Repair
  • 24/7 Roadside Semi Truck Repair
An orange truck with its hood open is parked on the side of the road.

Full service repair & maintenance for foreign & domestic diesel trucks & big rigs.

Two yellow excavators are working in a quarry.

Expert repair services for farming and construction vehicles and equipment.

A man is working on a car engine with a wrench.

We’re available 24/7 to provide emergency roadside support for heavy duty vehicles.

Locally owned and operated Custom T Repair offers full service farm equipment, construction equipment and semi truck repair in Springfield, AR and the surrounding communities.


Our team of talented diesel truck mechanics have more than 40 years of combined experience servicing big rigs, construction vehicles, farm vehicles and other medium duty and heavy duty commercial equipment, trucks and vehicles. With two conveniently located truck repair shops and 24/7 mobile truck repair available, we are ready to assist with any commercial truck repair needs. Whether it is time for routine truck maintenance, including semi truck oil changes, fluid services, or battery replacement, or you need diesel engine repair, truck transmission repair or have suffered a breakdown and need roadside truck repair, we’re here to help. To learn more about our local semi truck repair shop, or to request an estimate for the cost of semi truck repair in Springfield or the surrounding Arkansas communities,  please give us a call.

Custom T Repair is proud to help local, regional and national truckers, farmers and construction workers keep their commercial vehicles running strong. We understand how critical a quick turnaround is when you require maintenance or truck repair. That’s why our full service diesel repair shops in Springfield fix truck problems with the latest diagnostic and repair equipment. Our investment into this technology allows our truck technicians to minimize your vehicle’s downtime, getting you back to the job fast. At the first sign of truck trouble, or when you require scheduled diesel equipment maintenance or semi truck maintenance in Springfield, AR don’t hesitate to call Custom T Repair at (501) 208-4730. We look forward to assisting with your commercial vehicle’s needs.

Beige metal building with open bays; service truck parked outside.

Custom T Repair Blog

by Custom T Repair 16 January 2026
When a semi truck experiences mechanical or electronic issues, getting it back on the road quickly is critical. Mobile semi truck diagnostics have become an increasingly popular solution for fleet operators and owner-operators who want fast, accurate answers without the delays of towing to a repair shop. Understanding how mobile diagnostics work and what they can offer helps drivers make informed decisions when breakdowns or warning lights occur. At Custom T Repair, we provide expert mobile semi truck diagnostics in Springfield, AR. Here’s a look at some of the FAQs about mobile semi truck diagnostics.. What Are Mobile Semi Truck Diagnostics? Mobile semi truck diagnostics involve a trained technician traveling to the truck’s location with specialized diagnostic equipment. Using advanced scan tools, the technician connects directly to the truck’s onboard computer systems to retrieve fault codes and performance data. This allows them to identify issues without moving the vehicle. What Types of Problems Can Be Diagnosed? Mobile diagnostics can identify a wide range of issues, including check engine lights, sensor failures, emissions system faults, and communication errors between control modules. While diagnostics do not always include full repairs, they provide valuable insight into what is wrong and how severe the problem may be. This information helps drivers decide whether the truck can safely continue operating or needs immediate repair. Do Mobile Diagnostics Save Time and Money? One of the biggest benefits of mobile diagnostics is reduced downtime. Instead of waiting for a tow or sitting in a shop queue, drivers can receive answers on-site. This can help avoid unnecessary towing costs and prevent minor issues from becoming major repairs. Knowing exactly what is wrong also allows for better planning, whether that means scheduling a repair or sourcing specific parts in advance. When Should You Request Mobile Diagnostics? Mobile diagnostics are especially useful when warning lights appear, performance suddenly drops, or the truck enters a derate condition. They are also helpful when a truck will not start or when a driver is unsure whether it is safe to continue driving. Early diagnostics can often prevent further damage. Where Can I Find Semi Truck Diagnostics and Repair in Springfield, AR? For semi truck diagnostics and repair in Springfield, AR and the surrounding area, contact Custom T Repair at  (501) 208-4730  . Our local diesel mechanics can expertly handle your semi truck repair and maintenance needs in the greater Springfield, AR area!
by Custom T Repair 16 December 2025
A semi truck’s battery system is responsible for powering critical electrical components, starting the engine, and keeping essential systems running efficiently. Because semi trucks rely on strong, reliable power, battery issues can quickly lead to breakdowns and downtime. Semi truck battery diagnostics play an essential role in identifying problems early and ensuring your truck remains dependable on the road. At Custom T Repair, we provide expert semi truck battery diagnostics in Springfield, AR. Here are four aspects of battery diagnostics every driver and fleet operator should understand. Recognizing the Early Signs of Battery Trouble Effective battery diagnostics begin with recognizing symptoms that suggest a problem. Dimming headlights, slow engine cranking, weak interior lights, and electrical accessories that behave inconsistently can all point to battery issues. Catching these symptoms early allows you to schedule a diagnostic test before the battery fails completely, helping you avoid delays and costly roadside assistance. Testing Battery Voltage and Load Capacity A core part of the diagnostic process involves checking the battery’s voltage and load-handling ability. Technicians use specialized tools to measure resting voltage, which helps determine if the battery is holding an adequate charge. Load testing evaluates how the battery performs under simulated operating conditions. Even if a battery appears healthy on the surface, voltage and load testing can uncover hidden weaknesses. Inspecting Connections, Cables, and Corrosion Battery performance depends heavily on clean, secure electrical connections. Corrosion on terminals, frayed cables, or loose clamps can cause voltage drops or inconsistent electrical flow. As part of a thorough diagnostic, technicians can inspect all connections around the battery, alternator, and starter system. Checking the Alternator and Charging System A battery is only as reliable as the charging system that supports it. If the alternator isn’t producing the proper voltage, the battery may drain quickly or fail prematurely. Battery diagnostics can include testing alternator output. A faulty alternator can mimic battery failure, so checking the charging system is crucial for accurate diagnosis. Semi Truck Diagnostics and Repair in Springfield, AR For semi truck repair in Springfield, AR and the surrounding area, contact Custom T Repair at  (501) 208-4730  . Our local diesel mechanics can expertly handle your semi truck repair and maintenance needs in the greater Springfield area!
Semi-truck being worked on in a garage; parts and tools scattered on the floor.
by Custom T Repair 2 August 2024
Regular oil changes are essential for keeping your semi truck in good working order. In general, we recommend changing your semi's oil every 25,000 to 50,000 miles. The interval will vary depending on numerous factors, including the type of oil used, the age and condition of the truck, and the driving conditions you face. When it’s time to schedule an oil change for your truck, contact Custom T Repair , with shops in Springfield, AR. Using high-quality synthetic oil can increase the time between oil changes, but conventional oil may require more regular changes. To maintain peak performance and prevent engine wear, older trucks may require oil changes closer to the 25,000-mile mark. Oil changes keep your semi truck's engine clean, decrease friction, and avoid overheating, all of which help to extend its life and durability. Consult the owner's manual and talk to a trusted mechanic about the optimal oil change schedule for your truck. Regular maintenance, including periodic oil changes, is essential for keeping your semi truck running smoothly. What Are the Risks of Not Changing Your Oil? Not changing your semi truck's oil can have serious consequences. Old and dirty oil diminishes its ability to adequately lubricate the engine, resulting in increased friction and heat. This can cause parts to wear out faster and result in engine overheating. Over time, this carelessness can cause significant engine damage, expensive repairs, or even complete engine failure. Regular oil changes are a basic but important part of maintaining your semi truck and avoiding catastrophic problems. Semi Truck Maintenance in Springfield Keeping up with scheduled semi truck maintenance is key to keeping your tractor-trailer running great mile after mile. At Custom T Repair, our crew is equipped to perform any type of diesel truck maintenance for all makes and models of medium-duty trucks, heavy-duty trucks, and big rigs. This includes belt and hose services, truck fluid flush services, cooling system service, diesel fuel injection cleaning, diesel fuel filter replacement, air filter replacement, glow plug replacement, and other diesel engine maintenance services. Give us a call at  (501) 208-4730  to request a quote for diesel maintenance in Springfield or the surrounding community.

Custom T Repair Customer Reviews