The 1999 Ford F-150 came with several transmission options, depending on the engine and drivetrain configuration. The most common transmissions for this model year were the 4R70W automatic and the 5-speed manual.

Automatic Transmission

4R70W

The 4R70W was the primary automatic transmission option for the 1999 F-150. This four-speed automatic transmission was designed for rear-wheel drive vehicles and could handle up to 700 ft-lbs of torque. Key features include:

  • Overdrive capability
  • Electronic shift control
  • Improved fuel efficiency compared to earlier models

The 4R70W was typically paired with the 4.6L V8 engine, offering smooth shifts and reliable performance.

Manual Transmission

5-Speed Manual

For those who preferred a manual transmission, the 1999 F-150 offered a 5-speed manual option. This transmission was often paired with the 4.2L V6 engine. Features include:

  • Synchronized gears for smoother shifting
  • Improved fuel economy compared to automatic options
  • Greater driver control over gear selection

Transmission Specifications

Specification4R70W Automatic5-Speed Manual
Number of Gears4 forward, 1 reverse5 forward, 1 reverse
First Gear Ratio2.84:13.91:1
Overdrive Ratio0.70:10.80:1

Transmission Fluid

Proper maintenance is crucial for transmission longevity. For the 1999 F-150:

  • The 4R70W automatic uses Mercon V transmission fluid
  • The 5-speed manual typically uses Mercon fluid

It's important to check and change the transmission fluid according to the manufacturer's recommended schedule.

Common Issues

While generally reliable, some 1999 F-150 owners have reported transmission issues:

  • Delayed or harsh shifting in automatic transmissions
  • Difficulty engaging gears in manual transmissions
  • Transmission overheating during heavy towing

Regular maintenance and prompt attention to any unusual symptoms can help prevent major transmission problems.

FAQs About 1999 Ford F-150 Transmissions

    • Can I swap a transmission from a different year F-150?
      While possible, it's best to use a transmission from the same year or compatible model years to ensure proper fitment and function.
    • How often should I change the transmission fluid?
      Ford recommends changing the fluid every 30,000 to 60,000 miles, depending on usage and driving conditions.
    • What are signs of transmission failure?
      Warning signs include slipping gears, unusual noises, delayed engagement, and transmission fluid leaks.