1991 Ford LTL9000

Introduction to the 1991 Ford LTL9000

The 1991 Ford LTL9000 is a heavy-duty truck that was available with a variety of engine and transmission options. Some of the most popular engine options included the Cummins NTC-270, Cummins NTC-350, and the Caterpillar 3406E. Transmission options included the Eaton Fuller 10-speed manual transmission and the Allison HT740 automatic transmission.

People who like the Ford LTL9000 appreciate its powerful engines, durable construction, and comfortable interior. However, some people have reported issues with the vehicle’s engine, transmission, and other components.

Engine

Cummins NTC-270

• Fuel Injector Failure
  • Description/Symptoms: The fuel injectors can fail, causing the engine to run rough or stall.
  • Solution: Replace the fuel injectors.
  • Estimated Cost to Fix: $500 - $1,000+
  • Recalls: None Found
• Head Gasket Failure
  • Description/Symptoms: The head gasket can fail, causing coolant and oil to leak.
  • Solution: Replace the head gasket.
  • Estimated Cost to Fix: $800 - $1,200+
  • Recalls: None Found

Cummins NTC-350

• Turbocharger Failure
  • Description/Symptoms: The turbocharger can fail, causing a loss of power.
  • Solution: Replace the turbocharger.
  • Estimated Cost to Fix: $1,000 - $1,500+
  • Recalls: None Found
• Oil Pump Failure
  • Description/Symptoms: The oil pump can fail, causing a loss of oil pressure.
  • Solution: Replace the oil pump.
  • Estimated Cost to Fix: $600 - $800+
  • Recalls: None Found

Caterpillar 3406E

• Crankshaft Bearing Failure
  • Description/Symptoms: The crankshaft bearings can fail, causing a knocking noise and a loss of power.
  • Solution: Replace the crankshaft bearings.
  • Estimated Cost to Fix: $2,000 - $3,000+
  • Recalls: None Found
• Injection Pump Failure
  • Description/Symptoms: The injection pump can fail, causing the engine to run rough or stall.
  • Solution: Replace the injection pump.
  • Estimated Cost to Fix: $1,500 - $2,000+
  • Recalls: None Found

Transmission

Eaton Fuller 10-Speed Manual Transmission

• Clutch Failure
  • Description/Symptoms: The clutch can fail, causing the transmission to slip or not engage.
  • Solution: Replace the clutch.
  • Estimated Cost to Fix: $500 - $800+
  • Recalls: None Found
• Transmission Gear Failure
  • Description/Symptoms: The transmission gears can fail, causing a grinding noise or a loss of power.
  • Solution: Replace the transmission gears.
  • Estimated Cost to Fix: $1,000 - $1,500+
  • Recalls: None Found

Allison HT740 Automatic Transmission

• Torque Converter Failure
  • Description/Symptoms: The torque converter can fail, causing the transmission to slip or not engage.
  • Solution: Replace the torque converter.
  • Estimated Cost to Fix: $1,200 - $1,800+
  • Recalls: None Found
• Transmission Valve Body Failure
  • Description/Symptoms: The transmission valve body can fail, causing the transmission to shift erratically or not shift at all.
  • Solution: Replace the transmission valve body.
  • Estimated Cost to Fix: $600 - $1,000+
  • Recalls: None Found

Suspension

• Leaf Spring Failure
  • Description/Symptoms: The leaf springs can fail, causing the vehicle to sag or bounce excessively.
  • Solution: Replace the leaf springs.
  • Estimated Cost to Fix: $500 - $800+
  • Recalls: None Found
• Shock Absorber Failure
  • Description/Symptoms: The shock absorbers can fail, causing the vehicle to ride rough or bounce excessively.
  • Solution: Replace the shock absorbers.
  • Estimated Cost to Fix: $200 - $400+
  • Recalls: None Found

Electrical

• Battery Failure
  • Description/Symptoms: The battery can fail, causing the vehicle to not start.
  • Solution: Replace the battery.
  • Estimated Cost to Fix: $100 - $200+
  • Recalls: None Found
• Alternator Failure
  • Description/Symptoms: The alternator can fail, causing the vehicle to lose power.
  • Solution: Replace the alternator.
  • Estimated Cost to Fix: $500 - $800+
  • Recalls: None Found

Exterior

• Rust
  • Description/Symptoms: The vehicle can rust, especially in areas where there is a lot of salt or moisture.
  • Solution: Prevent rust by washing and waxing the vehicle regularly. If rust does occur, it can be repaired by a body shop.
  • Estimated Cost to Fix: Varies depending on the extent of the damage
  • Recalls: None Found
• Headlight Failure
  • Description/Symptoms: The headlights can fail, making it difficult to see at night.
  • Solution: Replace the headlights.
  • Estimated Cost to Fix: $100 - $200+
  • Recalls: None Found

Interior

• Climate Control Failure
  • Description/Symptoms: The climate control system can fail, causing the vehicle to become too hot or too cold.
  • Solution: Repair or replace the climate control system.
  • Estimated Cost to Fix: $500 - $1,000+
  • Recalls: None Found
• Radio Failure
  • Description/Symptoms: The radio can fail, making it impossible to listen to music or the radio.
  • Solution: Replace the radio.
  • Estimated Cost to Fix: $200 - $400+
  • Recalls: None Found

Summary

The 1991 Ford LTL9000 is a powerful and durable truck that has a number of potential issues. However, most of these issues are relatively minor and can be fixed for a reasonable cost. The most severe issues, such as engine and transmission failures, are less common but can be very expensive to repair. Overall, the Ford LTL9000 is a reliable truck that is popular with many drivers.