truck repair services

Diesel Engine Diagnostics & Repair

Accurate Diagnostics. Reliable Repairs. Maximum Uptime.

When your diesel engine isn’t performing properly, every minute of downtime costs your business money. At Ross Body & Frame, we specialize in diagnosing and repairing diesel engines for heavy-duty trucks, commercial vehicles, buses, municipal equipment, and construction fleets.

Our experienced technicians use advanced electronic diagnostic equipment to accurately identify engine problems instead of simply replacing parts based on guesswork. Today’s diesel engines rely on sophisticated electronic control systems, sensors, fuel management systems, and emissions technology that require professional diagnostic tools and expert knowledge to repair correctly. Modern diesel repair increasingly depends on computerized diagnostics to identify root causes quickly and reduce unnecessary repairs.

Whether you’re experiencing a warning light, loss of power, excessive smoke, poor fuel economy, or difficult starting, we’ll find the source of the problem and get your truck back on the road as quickly as possible.


Complete Diesel Engine Diagnostic Services

Our technicians perform comprehensive engine inspections and computerized diagnostics to identify problems throughout your engine system.

We diagnose issues involving:

  • Check Engine Lights
  • Engine Performance Problems
  • Hard Starting or No Start Conditions
  • Loss of Power
  • Excessive Exhaust Smoke
  • Poor Fuel Economy
  • Rough Idle
  • Engine Misfires
  • Turbocharger Performance Issues
  • Cooling System Problems
  • Oil Leaks
  • Fuel System Problems
  • Overheating
  • Low Oil Pressure
  • Sensor Failures
  • Electronic Control Module (ECM) Faults

Using professional diagnostic equipment allows us to accurately identify fault codes, monitor live engine data, test system performance, and pinpoint the underlying cause of engine issues before repairs begin.


Diesel Engine Repair Services

After diagnosing the problem, our technicians perform dependable repairs using quality replacement parts and proven repair procedures.

Our diesel engine repair services include:

Fuel System Repair

We repair and replace:

  • Fuel Injectors
  • Injection Pumps
  • Fuel Lines
  • Fuel Filters
  • High Pressure Fuel Systems
  • Fuel Sensors

Turbocharger Repair

Turbocharger issues can reduce engine power and fuel efficiency.

We service:

  • Turbochargers
  • Wastegates
  • Charge Air Coolers
  • Boost Leaks
  • Intake Systems

Cooling System Repair

Overheating can quickly cause expensive engine damage.

We repair:

  • Radiators
  • Water Pumps
  • Thermostats
  • Cooling Fans
  • Coolant Leaks
  • Hoses

Engine Component Repair

Our technicians repair or replace:

  • Cylinder Heads
  • Gaskets
  • Seals
  • Belts
  • Sensors
  • Water Pumps
  • Oil Pumps
  • Timing Components

Emissions System Repair

Modern diesel engines rely on advanced emissions systems to meet environmental regulations.

We diagnose and repair:

  • DPF Systems
  • DEF Systems
  • EGR Valves
  • SCR Components
  • Emissions Sensors
  • Exhaust Aftertreatment Systems

Fleet Diesel Engine Repair

Commercial fleets depend on reliable trucks to keep business moving.

Ross Body & Frame works with:

  • Trucking Companies
  • Contractors
  • Municipal Fleets
  • Delivery Companies
  • Utility Companies
  • Construction Companies
  • Bus Operators
  • Landscaping Companies

We understand that minimizing downtime is critical. Our goal is to diagnose problems quickly, perform quality repairs, and return your vehicle to service with confidence.


Signs Your Diesel Engine Needs Service

Don’t ignore warning signs that could lead to costly repairs.

Schedule service if you notice:

  • Check Engine Light
  • Loss of Engine Power
  • Excessive Black, White, or Blue Smoke
  • Increased Fuel Consumption
  • Hard Starting
  • Knocking or Ticking Noises
  • Rough Running
  • Excessive Exhaust Odor
  • Overheating
  • Oil or Coolant Leaks
  • Frequent Regeneration Cycles

Early diagnosis often prevents more extensive engine damage and reduces repair costs.


Why Choose Ross Body & Frame?

At Ross Body & Frame, we combine advanced diagnostic technology with years of heavy-duty truck repair experience.

Our customers choose us because we provide:

  • Experienced Diesel Technicians
  • Advanced Computer Diagnostics
  • Honest Repair Recommendations
  • Quality Replacement Parts
  • Fast Turnaround Times
  • Commercial Fleet Expertise
  • Heavy-Duty Truck Experience
  • Reliable Customer Service

Our goal is simple—accurately diagnose the problem, perform lasting repairs, and help keep your trucks operating safely and efficiently.


Schedule Diesel Engine Diagnostics Today

If your diesel truck is experiencing performance issues, warning lights, excessive smoke, or engine problems, don’t wait for a breakdown.

Contact Ross Body & Frame today to schedule professional diesel engine diagnostics and repair. Our experienced technicians will identify the problem, explain your repair options, and get your vehicle back on the road with dependable service you can trust.

Ross Body & Frame Works has been the Lehigh Valley’s go-to heavy-duty truck repair shop for over 60 years. Located at 1046 N. Gilmore St. and 701 Union Blvd in Allentown, PA, our multi-bay garage is equipped and staffed to handle everything from routine maintenance to major collision repairs on commercial trucks, trailers, and heavy equipment.

CALL  US  AT (610) 435-8013  OR  USE  THIS

CONTACT  FORM

Ross Body & Frame is the repair and towing partner your business can rely on. Protect your investment, keep your fleet moving, and reduce costly downtime with dependable fleet support. From truck repair to heavy towing services, our team is ready to help when you need us most. Don’t wait until a breakdown disrupts your operations—contact us today to discuss your fleet repair and towing needs.

Service Areas For Truck Repair, Recovery or Contractor Services:

Entire Lehigh Valley area including Allentown, Bethlehem, Easton, Trexlertown, Macungie, Whitehall, Northampton, Emmaus, Catasauqua, Fogelsville, Coopersburg, Nazareth, Slatington, and Bath, PA

 

Major Roads & Highways We Serve:

I-78 · I-476 · Route 22 · Route 222 · Route 100 · Route 309 · Route 33 · Route 248

Contact Information:

Schedule Service: (610) 435-8013

Emergency 24/7

 Dispatch: (610) 774-9994

www.A1TowingLehighValley.com