Onsite Truck and Trailer logo featuring bold red text, emphasizing diesel repair services in Little Rock, Arkansas.

Location

10802 Sardis Rd,
Mabelvale, AR 72103

Office Hours

Mon – Fri  7am – 5pm
Sat & Sun – Closed

Call Now

Call Our Experts at (501) 251-7243(501) 251-7243

Diesel Maintenance

Little Rock Diesel Maintenance

Everyone knows maintenance is cheaper than repairs. Onsite offers full service maintenance for fleets to extend the life of your trucks. Whether you need a tune-up, tire rotation, oil and lube, brake and suspension service, or another preventative maintenance Onsite’s certified diesel mechanics have you covered.

Electrical Repair Warning Signs

Onsite Truck & Trailer Repair specializes in finding solutions for complex, hard-to-diagnose problems. Your truck has systems to alert you to issues, but there are other signs that you should be looking for, and if found, addressed before they become an issue. These include:

  • Engine that struggles to start
  • Damaged or bloated battery
  • Dim or flickering headlights and/or brake lights
  • The smell of burnt plastic or wiring
  • Cracked, worn, or discolored wiring
  • Blown fuses/tubes
Laptop displaying diagnostic information for diesel truck electrical systems, with visible hydraulic components and wiring in the background, highlighting onsite repair services by Onsite Truck & Trailer Repair.

Common Types of Diesel Truck Electrical Repairs

In recent years, truck electronics have advanced significantly. Your truck’s performance depends on its electrical system which at times can feel like a complex maze. Onsite’s certified diesel mechanics are familiar with navigating the electrical mazes in big trucks. Some common repairs we help customers with include:

  • ECU Unit repair
  • Circuit protection device replacement
  • Dead battery replacement
  • Head and tail light wiring and fuse repair
Hand holding a multimeter with digital display, measuring electrical components in a diesel truck, illustrating diagnostic testing for electrical repairs.

Check Engine Light Issues

When your check engine light pops on don’t ignore it. It could be something simple like a loose or faulty gas cap or a more severe issue like a bad catalytic converter. Whatever the cause, it’s best not to take a chance of causing significant damage.

Dashboard display of a diesel truck showing check engine light, speedometer, RPM gauge, and fuel level indicator, emphasizing the importance of addressing check engine light issues for optimal truck performance and electrical system diagnostics.

Diagnostic Testing & Adjustments

Our shop has the necessary software to not only pinpoint issues, but we can adjust parameters in all engines. If your truck doesn’t seem to be running the way it should, we’ll conduct a diagnostic test to determine the problem. Diagnostic testing can reveal issues in your truck’s engine, transmission, exhaust system, brakes, and other major components.

Diagnostic laptop and cables for truck engine testing, featuring software for pinpointing issues and adjusting parameters, essential for diesel truck electrical repairs.

Engine Control Unit (ECU) Repair

A malfunctioning Engine Control Unit (ECU) is one of the most typical electrical issues with semi-trucks. The ECU controls the timing and fuel injection of the engine, and keeps an eye on the engine’s sensors and emission control mechanism. Your engine won’t operate correctly and stall if the ECU isn’t working properly.

Diesel truck technician performing ECU diagnostics and repair on an engine, with a laptop and diagnostic tools visible, in a workshop setting.

Wiring Repair

Wires get loose and break over time due to your truck’s continuous vibration. This introduces risks like short circuits and even fire. The electrical “noise” that unsecured cables may produce can also interfere with your truck’s onboard computer systems. Compromised circuit protectors can let too much current pass through the electrical system and result in a catastrophic power surge.

Mechanic wearing gloves repairing diesel truck wiring, focusing on electrical connections and components, highlighting onsite electrical repair services.