2015 Volvo VNL 670

Introduction to the 2015 Volvo VNL 670

The 2015 Volvo VNL 670 is a powerful and versatile semi-truck that is known for its efficiency, comfort, and safety. It is powered by a D13 engine that produces 500 horsepower and 1,850 lb-ft of torque. The VNL 670 is available with multiple transmission options, including a 13-speed manual and a 12-speed automated manual.

Engine

D13 Engine

• Excessive Oil Consumption
  • Description/Symptoms: The engine may consume more oil than normal, requiring frequent top-ups.
  • Solution: Replace piston rings and valve seals.
  • Estimated Cost to Fix: $3,000 - $5,000+
• EGR Valve Failure
  • Description/Symptoms: The EGR valve may fail, causing the engine to run poorly and emit excessive emissions.
  • Solution: Replace the EGR valve.
  • Estimated Cost to Fix: $500 - $1,000
• Turbocharger Failure
  • Description/Symptoms: The turbocharger may fail, resulting in a loss of power and fuel efficiency.
  • Solution: Replace the turbocharger.
  • Estimated Cost to Fix: $2,000 - $3,000+
• Diesel Particulate Filter (DPF) Problems
  • Description/Symptoms: The DPF may become clogged or malfunction, causing reduced engine power and increased fuel consumption.
  • Solution: Clean or replace the DPF.
  • Estimated Cost to Fix: $500 - $1,500+

Transmission

13-Speed Manual Transmission

• Shifting Problems
  • Description/Symptoms: The transmission may have difficulty shifting gears smoothly or may become stuck in gear.
  • Solution: Replace the shift linkage or transmission synchronizers.
  • Estimated Cost to Fix: $1,000 - $2,000+
• Clutch Failure
  • Description/Symptoms: The clutch may slip or become damaged, resulting in difficulty shifting gears or loss of power.
  • Solution: Replace the clutch assembly.
  • Estimated Cost to Fix: $2,500 - $4,000+

12-Speed Automated Manual Transmission (AMT)

• Control Module Failure
  • Description/Symptoms: The AMT control module may malfunction, causing shifting problems and other issues.
  • Solution: Replace the control module.
  • Estimated Cost to Fix: $1,500 - $2,500+
• Sensor Failure
  • Description/Symptoms: Various sensors, such as the clutch position sensor or the speed sensor, may fail, causing shifting problems or other issues.
  • Solution: Replace the failed sensor.
  • Estimated Cost to Fix: $500 - $1,000+

Suspension

• Leaf Spring Breakage
  • Description/Symptoms: The leaf springs may break, causing the truck to sag and lose stability.
  • Solution: Replace the broken leaf springs.
  • Estimated Cost to Fix: $500 - $1,000+ per spring
• Shock Absorber Failure
  • Description/Symptoms: The shock absorbers may fail, causing the truck to ride roughly and have reduced stability.
  • Solution: Replace the failed shock absorbers.
  • Estimated Cost to Fix: $300 - $600+ per shock absorber

Electrical

• Battery Drain
  • Description/Symptoms: The battery may drain quickly, even when the truck is turned off.
  • Solution: Diagnose the source of the drain (e.g., faulty alternator, parasitic draw) and repair/replace the affected components.
  • Estimated Cost to Fix: $500 - $1,500+
• Wiring Harness Problems
  • Description/Symptoms: The wiring harness may become damaged or faulty, causing electrical issues such as loss of power or intermittent operation of components.
  • Solution: Repair or replace the affected wiring section.
  • Estimated Cost to Fix: $500 - $2,000+

Exterior

• Rust and Corrosion
  • Description/Symptoms: The truck’s body panels, frame, and other metal components may develop rust or corrosion over time.
  • Solution: Repair or replace the affected components.
  • Estimated Cost to Fix: $500 - $5,000+

Interior

• Dashboard Switch Failures
  • Description/Symptoms: The dashboard switches, such as the light switch or window switches, may fail and stop working properly.
  • Solution: Replace the failed switches.
  • Estimated Cost to Fix: $100 - $500+

Summary

The 2015 Volvo VNL 670 is a reliable and capable semi-truck, but it has experienced some common issues, particularly with the engine and transmission components. The cost of repairs for these issues can be significant, ranging from hundreds to thousands of dollars. However, the vehicle’s fuel efficiency, comfort features, and safety ratings make it a popular choice among professional drivers.