1991 Ford F Super Duty

1991 Ford F Super Duty

The 1991 Ford F Super Duty is a heavy-duty pickup truck offered in various configurations with a choice of powerful engines and transmissions. It was known for its ruggedness, towing capacity, and spacious cabin. However, like any vehicle, it had its share of issues.

Engine

• 7.3L V8 Diesel

  • Head Gasket Failure: Blown head gaskets are a prevalent issue, leading to coolant leaks, overheating, and engine damage. The failure often occurs due to excessive heat and pressure.
    • Solution: Replacing the head gaskets, along with associated bolts and seals.
    • Estimated Cost to Fix: $1,500 - $3,000
    • Recalls: None Found
  • Fuel Injector Sticking: Sticking fuel injectors can cause rough idling, poor acceleration, and reduced fuel economy.
    • Solution: Cleaning or replacing the fuel injectors.
    • Estimated Cost to Fix: $400 - $800
    • Recalls: None Found

• 7.5L V8 Gasoline

  • Intake Manifold Gasket Leak: A leaking intake manifold gasket can result in vacuum leaks, rough idling, and reduced engine performance.
    • Solution: Replacing the intake manifold gasket.
    • Estimated Cost to Fix: $300 - $600
    • Recalls: None Found
  • Spark Plug Fouling: Fouled spark plugs can cause misfiring, poor acceleration, and increased emissions.
    • Solution: Replacing the spark plugs.
    • Estimated Cost to Fix: $100 - $200
    • Recalls: None Found

Transmission

• E4OD Automatic

  • Torque Converter Shudder: A shuddering sensation during acceleration is often caused by a failing torque converter.
    • Solution: Replacing the torque converter.
    • Estimated Cost to Fix: $1,000 - $1,500
    • Recalls: None Found
  • Transmission Slippage: Slipping gears or delayed shifting can indicate transmission issues, such as worn clutches or a faulty valve body.
    • Solution: Repairing or rebuilding the transmission.
    • Estimated Cost to Fix: $2,000 - $4,000
    • Recalls: None Found

Suspension

• Leaf Spring Failure: Broken or sagging leaf springs can affect ride quality, handling, and towing capacity.
  • Solution: Replacing the leaf springs.
  • Estimated Cost to Fix: $500 - $1,000
  • Recalls: None Found
• Ball Joint Wear: Worn ball joints can cause clunking noises, reduced steering precision, and increased tire wear.
  • Solution: Replacing the ball joints.
  • Estimated Cost to Fix: $300 - $600
  • Recalls: None Found

Electrical

• Alternator Failure: A faulty alternator can lead to battery discharge, dimming lights, and electrical system malfunctions.
  • Solution: Replacing the alternator.
  • Estimated Cost to Fix: $500 - $800
  • Recalls: None Found
• Starter Solenoid Failure: A failing starter solenoid prevents the starter from engaging the engine.
  • Solution: Replacing the starter solenoid.
  • Estimated Cost to Fix: $200 - $400
  • Recalls: None Found

Exterior

• Rust: The F Super Duty is susceptible to rust, especially on the undercarriage and body panels.
  • Solution: Rustproofing and regular maintenance to prevent further corrosion.
  • Estimated Cost to Fix: Varies depending on the extent of rust damage
  • Recalls: None Found

Interior

• Window Regulators: Failed window regulators can prevent windows from rolling up or down.
  • Solution: Replacing the window regulators.
  • Estimated Cost to Fix: $300 - $600
  • Recalls: None Found
• Door Lock Actuators: Malfunctioning door lock actuators can cause difficulty locking or unlocking doors.
  • Solution: Replacing the door lock actuators.
  • Estimated Cost to Fix: $200 - $400
  • Recalls: None Found

Summary

The 1991 Ford F Super Duty is a capable pickup truck, but it has its fair share of reliability issues. Engine and transmission problems are the most common and can be expensive to repair. Suspension and electrical components can also fail, but the severity and cost of these issues vary. Overall, the F Super Duty’s issues are moderate to severe, and repairs can be costly.