Diesel Truck Repair in Rockford

You can rely on Decker 24 Hr Truck And Trailer, Inc.'s mechanics to treat your fleet, trailer, or diesel truck repairs with the utmost urgency. We understand downtime costs your business money. That's why we strive to be Rockford's top source for semi-truck diagnostic and repair services you can access 24 hours a day, 7 days a week.

We have the tools, training, and experience to pinpoint and resolve brake problems, tire issues, exhaust problems, and everything in between. Our shop is conveniently located near I-90 and I-39. Bring your rig by for service, or call (847) 481-9851 now to have one of our mobile mechanics come to you.

Connect With Diesel Truck Repair Specialists

How Does Diesel Truck Service Help You Minimize Downtime?

When you're on a tight schedule, a breakdown can throw everything off, from missing delivery deadlines to lowering customer satisfaction. Our diesel truck service is here to prevent that from happening. We understand how valuable your time is, so we focus on getting your truck back on the road as quickly as possible.

Our technicians find and fix issues, performing thorough diagnostics to address the root causes to make sure they won't resurface again later. By taking care of potential problems before they escalate, we help create a safer, more reliable driving experience. With our prompt service and attention to detail, you'll spend less time waiting for repairs and more time focusing on what matters-keeping your business moving forward efficiently and safely.

Decker 24 Hr Truck And Trailer, Inc.'s Diesel Truck Repair Services

We're certified to offer all the in-shop and mobile diesel truck repair services you need to keep your rig up to code and working reliably.

Our expertise covers the following and many more repair and maintenance service options:

  • Brake system repair
  • Cooling system maintenance
  • Electrical system repair
  • Engine diagnostics and repair
  • Exhaust system repair
  • Suspension and steering repair
  • Tire services
  • Trailer repair and maintenance
  • Transmission repair and replacement

Diesel Brake Service

Your truck’s braking system is a complex network that ensures safe and efficient operation.

Essential components that need to be in working order include:

  • Air compressors that generate the air pressure to give you stopping power
  • Brake chambers that convert air pressure into mechanical force
  • Slack adjusters that help you maintain the right brake-to-shoe clearance
  • Brake shoes and drums that create the friction you need to stop your vehicle
  • Air tanks to store compressed air
  • Valves for controlling airflow
  • Anti-lock braking system (ABS) modules to prevent wheel locking under heavy braking

Keeping these components in top condition ensures reliable stopping power, prevents accidents, and ensures compliance with safety regulations.

We specialize in diesel brake service to keep you safe and your vehicle running at peak performance. If you’re experiencing issues with any of these brake components, give us a call.

How Can You Tell If Brakes Are Bad on a Semi Truck?

Keeping a close eye on your brake status is essential for complying with driving regulations that govern the transport industry. You might notice warning signs your brakes are getting bad, like longer stopping distances, a spongy or stiff brake pedal, or unusual noises that might include grinding or squealing. Vibrations or pulling to one side while braking can also indicate worn brake components.

When your brake warning light on your dashboard comes on, it's a clear sign that your brakes need immediate attention. Regular brake inspections will help you catch these issues early.

Diesel Engine Mechanic

The engine is where your truck gets the energy to haul massive loads across long distances, and when properly maintained, it delivers the optimal fuel efficiency you depend on. To keep your engine performing at its best and ensure safety, you’ll need to keep an eye on critical components.

This includes:

  • The fuel system: The fuel system requires clean filters and fully functioning injectors for efficient combustion.
  • The turbocharger: To prevent wear and tear, it’s important to have your engine’s turbocharger routinely inspected.
  • The cooling system: Your engine’s cooling system should also be checked every so often since it prevents overheating and maintains your engine’s consistent operation.
  • Oil quality and levels: Oil quality and levels are also critical for proper lubrication and minimizing engine wear.
  • The exhaust system: You’ll want to check your truck’s exhaust system to ensure its emissions remain within legal limits.

By staying proactive with these elements, you’ll meet safety and environmental standards, maximize performance, reduce downtime, and extend your truck’s lifespan.

We know your diesel engine is the heart of your vehicle—and our diesel engine mechanics are here to ensure it performs at its best. Trust us to handle all your diesel engine maintenance and repairs needs to keep your rig running smoothly.

What Would Cause a Diesel Engine to Suddenly Lose Power?

A sudden loss of power in a diesel truck engine can result from several issues, most of which are related to fuel delivery, air intake, or engine performance.

Here are some potential causes:

  • A clogged fuel filter or malfunctioning fuel pump might restrict fuel flow to your engine, disrupting combustion and reducing power output.
  • A dirty or blocked air filter can choke your engine, preventing it from receiving the oxygen needed for efficient combustion.
  • Problems with your turbocharger—including a damaged turbine or leaky hoses—can significantly reduce the engine’s ability to generate power.
  • A failing injector may cause uneven fuel distribution.
  • An issue with your engine control module (ECM) can result in mismanaged fuel and air ratios.
  • In some cases, exhaust backpressure from a clogged diesel particulate filter (DPF) can also cause a noticeable power drop.

Regular maintenance and prompt attention to warning signs will prevent these issues from sidelining your truck.

Why Is Your Semi Truck Idling High?

When your semi-truck is idling high, it’s often a sign that something is out of balance in your engine’s systems or controls.

Common causes include:

  • A malfunctioning idle air control valve, which regulates your engine’s RPM when your truck is stationary
  • An issue with the throttle position sensor sending incorrect signals to your ECM
  • A vacuum leak disrupting the air-to-fuel ratio
  • Dirty or faulty fuel injectors
  • A sticking throttle
  • Software issues within your ECM
  • Cold weather, which can sometimes cause temporary high idling since your engine compensates to efficiently warm up

Diagnosing and addressing high idling promptly prevents unnecessary fuel consumption, engine wear, and potential safety concerns while on the road. Regular maintenance and our professional diagnostics will help you pinpoint and resolve the issue effectively.

What Causes a Semi To Crank but Not Start?

We’ve all been there. Your semi-truck engine cranks, then coughs and sputters in protest before your truck sits silent. If your semi-truck cranks but won’t start, it’s usually because something prevents your engine from getting what it needs to run, whether it’s fuel, air, or the spark to ignite.

One common issue is a problem with your truck’s fuel system. A clogged fuel filter, a weak fuel pump, or even air trapped in the fuel lines can all prevent your engine from getting enough fuel.

Sometimes, it’s the air intake—a dirty air filter or a blocked intake can choke your engine, leaving it without the oxygen it needs.

Electrical problems, like a weak battery, a faulty ignition switch, or a sensor that isn’t working correctly, can also be to blame. This includes your crankshaft or camshaft position sensors, which are crucial for your engine to time everything just right.

When it’s cold out, diesel engines can struggle with fuel gelling or low compression, making it harder to fire up.

Whatever the issue, diagnosing it quickly and correctly is key to getting back on the road.

Affordable Semi Truck Transmission Repair

Your transmission is crucial, as it transfers power from the engine to the wheels, allowing your vehicle to shift gears and operate efficiently at various speeds and loads. When you’re experiencing problems with your transmission, we know that every dollar matters, and you need to keep your trucks on the road without overspending. That’s why we offer affordable rates.

When you work with us, our friendly diesel mechanics will explain all your options clearly and provide a straightforward estimate upfront. That way, you can make smart decisions for your fleet while saving time and money. Let us help you keep your trucks performing their best without stretching your budget.

What Are the Most Common Diesel Truck Transmission Problems?

Diesel truck transmissions can run into a few problems that require repair or replacement for safe big rig operation.

Here are some of the most common:

  • Slipping gears
  • Hard shifting
  • Overheating
  • Delayed engagement
  • Leaking transmission fluid
  • Torque converter problems
  • Electronic issues
  • Clutch failure

Repair Your Rig With a 24-Hour Diesel Truck Shop

There's no time to wait around, wondering what the next steps are when people rely on you to transport goods on time. When you run into 18-wheeler or trailer problems in Rockford, Decker 24 Hr Truck And Trailer, Inc. is the 24-hour diesel truck stop with all the solutions you need to resolve trucking issues as quickly as possible. In addition to a large facility with ten repair bays, we also offer prompt mobile diesel mechanic services, meaning we can speed things up even more by coming to you.

Partner with a truck and trailer mechanic who understands how important timely repairs and transparent pricing are to you. Reach us at (847) 481-9851 now to learn more about our 24-hour diesel repair services.

Looking for diesel truck repair in Rockford? Contact us at (847) 481-9851.