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2006 Ford F750

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By Research the Car 5 min read

The 2006 Ford F-750 is a medium-duty truck designed for commercial applications, praised for its robust build, towing capacity, and versatility. However, like any vehicle, it has its share of potential issues. The available engines for the 2006 F-750 included the Cummins ISB 5.9L inline-six diesel engine, producing around 200-325 horsepower and 520-610 lb-ft of torque depending on the specific tuning. The Cummins ISC 8.3L inline-six diesel engine, producing around 240-350 horsepower and 660-1050 lb-ft of torque, and the Caterpillar 3126 diesel engine, producing around 175-330 horsepower and 420-860 lb-ft of torque. Common transmissions include the Allison 1000, 2000, and 3000 series automatics and various manual transmissions depending on the application and engine choice. Owners appreciate the truck’s reliability and workhorse capabilities, but some express concerns about fuel economy, maintenance costs, and potential issues related to the diesel particulate filter (DPF) systems in later production models.

Engine

Cummins ISB 5.9L

  • Turbocharger Failure
    • Description/Symptoms: Loss of power, excessive black smoke, whining noise from the turbocharger.
    • Solution: Replace the turbocharger. Inspect and clean or replace oil feed and drain lines.
    • Estimated Cost to Fix: $1200 - $2500+
    • Recalls: None Found
  • Fuel Injector Issues
    • Description/Symptoms: Rough idle, misfires, decreased fuel economy, hard starting.
    • Solution: Replace faulty fuel injectors. May require recalibration of the ECM.
    • Estimated Cost to Fix: $300 - $800+ per injector.
    • Recalls: None Found

Cummins ISC 8.3L

  • Cooling System Problems
    • Description/Symptoms: Overheating, coolant leaks, pressure loss in the cooling system. Can be caused by radiator failure, water pump issues, or thermostat malfunction.
    • Solution: Diagnose the specific component causing the issue and replace it. Pressure test the system to identify leaks.
    • Estimated Cost to Fix: $200 - $1500+ depending on the part.
    • Recalls: None Found
  • Exhaust Manifold Cracks
    • Description/Symptoms: Exhaust leaks, loss of power, increased engine noise.
    • Solution: Replace the cracked exhaust manifold. Inspect the exhaust gaskets and replace as needed.
    • Estimated Cost to Fix: $800 - $1800+
    • Recalls: None Found

Caterpillar 3126

  • HEUI (Hydraulic Electronic Unit Injector) Pump Failure
    • Description/Symptoms: Hard starting, stalling, loss of power, engine knocking.
    • Solution: Replace the HEUI pump. Ensure proper oil pressure and volume to the pump.
    • Estimated Cost to Fix: $1500 - $3500+
    • Recalls: None Found
  • Injector Sleeve Leaks
    • Description/Symptoms: Coolant in the oil, white smoke from the exhaust, increased crankcase pressure.
    • Solution: Replace the leaking injector sleeves. This typically involves removing the cylinder head.
    • Estimated Cost to Fix: $2000 - $4000+
    • Recalls: None Found

Transmission

Allison 1000/2000/3000 Series

  • Shift Flare/Slipping
    • Description/Symptoms: Delay in engagement when shifting, engine RPM increases without corresponding increase in speed, transmission slipping.
    • Solution: Could be caused by worn clutches or faulty valve body. Requires a transmission rebuild or replacement.
    • Estimated Cost to Fix: $3000 - $7000+
    • Recalls: None Found
  • Torque Converter Issues
    • Description/Symptoms: Shuddering at low speeds, poor acceleration, overheating.
    • Solution: Replace the torque converter. Inspect the transmission for damage caused by the torque converter failure.
    • Estimated Cost to Fix: $1000 - $2500+
    • Recalls: None Found
  • Internal Leaks
    • Description/Symptoms: Internal seals deteriorate over time leading to reduced pressure in the transmission system. May cause reduced shift quality.
    • Solution: Rebuild or replace the transmission.
    • Estimated Cost to Fix: $3000 - $7000+
    • Recalls: None Found

Suspension

  • Leaf Spring Sagging/Cracking
    • Description/Symptoms: Vehicle leans to one side, rough ride, reduced load capacity.
    • Solution: Replace the leaf springs. Consider upgrading to heavier-duty springs if the vehicle is frequently used for heavy loads.
    • Estimated Cost to Fix: $500 - $1500+ per spring.
    • Recalls: None Found
  • Air Suspension Problems (if equipped)
    • Description/Symptoms: Air leaks, compressor failure, uneven ride height.
    • Solution: Repair or replace the air springs, compressor, or leveling valves. Check for leaks in the air lines.
    • Estimated Cost to Fix: $300 - $2000+ depending on the component.
    • Recalls: None Found

Electrical

  • Wiring Harness Issues
    • Description/Symptoms: Intermittent electrical problems, lights not working, gauges malfunctioning, starting problems.
    • Solution: Inspect the wiring harness for damaged or corroded wires. Repair or replace the damaged sections of the harness.
    • Estimated Cost to Fix: $100 - $1000+ depending on the severity.
    • Recalls: None Found
  • Starter Motor Failure
    • Description/Symptoms: Engine fails to crank, clicking noise when attempting to start.
    • Solution: Replace the starter motor. Check the battery and charging system to ensure proper operation.
    • Estimated Cost to Fix: $300 - $800+
    • Recalls: None Found

Exterior

  • Corrosion
    • Description/Symptoms: Rust forming on the body panels, especially in areas exposed to road salt.
    • Solution: Treat the rust with rust converter, repair or replace the affected panels, and apply a protective coating.
    • Estimated Cost to Fix: $100 - $5000+ depending on severity.
    • Recalls: None Found

Interior

  • HVAC Blower Motor Failure
    • Description/Symptoms: No air blowing from the vents, weak airflow, unusual noises from the blower motor.
    • Solution: Replace the blower motor. Check the blower motor resistor and wiring for damage.
    • Estimated Cost to Fix: $200 - $500+
    • Recalls: None Found

Summary

The 2006 Ford F-750, while a capable workhorse, can be subject to a variety of issues stemming from its robust diesel engines, heavy-duty transmission, and the wear and tear associated with commercial use. The most concerning issues relate to the engine, particularly the Cummins ISB 5.9L, Cummins ISC 8.3L, and Caterpillar 3126 engines. The Allison transmissions can also suffer from shift quality and slipping issues, potentially leading to costly rebuilds. Suspension and electrical issues, while less severe, can still cause significant downtime and maintenance expenses. Repair costs can range from a few hundred dollars for minor fixes to several thousand for major engine or transmission overhauls. Potential buyers should carefully inspect the vehicle’s maintenance history and consider a pre-purchase inspection by a qualified mechanic experienced with medium-duty trucks.

Ford, F750
Ford F750 2006
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