The power steering pump in a 1999 Ford Ranger is a crucial component for the vehicle's steering system, providing the hydraulic pressure necessary for smooth steering. This guide aims to assist both DIY enthusiasts and those seeking professional help with troubleshooting common issues, understanding replacement procedures, and ensuring proper maintenance of the power steering pump.

Understanding the Power Steering Pump

The power steering pump is responsible for supplying hydraulic fluid to the steering gear, making it easier to turn the steering wheel. In the 1999 Ford Ranger, this pump typically requires Automatic Transmission Fluid (ATF), specifically Mercon V, for optimal performance. Many users report that these pumps can be noisy, which is often a characteristic of the design rather than an indication of failure.

Common Issues with the 1999 Ford Ranger Power Steering Pump

  • Whining Noise: A common complaint among Ranger owners is a whining noise when turning the steering wheel. This can be due to air trapped in the system or low fluid levels. It's essential to ensure that the fluid is at the correct level and that there are no leaks.

  • Fluid Leaks: Check for leaks around the pump and hoses. If fluid is leaking, it may indicate a failing pump or damaged hoses.

  • Hard Steering: If the steering feels stiff or hard to turn, it could be due to low fluid levels, a failing pump, or issues with the steering rack.

  • Pulsating Steering: A pulsating sensation while turning may suggest air in the system or a malfunctioning pump.

Replacing the Power Steering Pump

If troubleshooting indicates that replacement is necessary, follow these steps:

Tools Required

  • Assorted wrenches
  • Power steering pulley puller kit
  • ATF (Automatic Transmission Fluid)
  • Drain pan
  • Funnel
  • Socket set (10mm and 18mm)
  • Ratchet
  • Pliers

Replacement Steps

1. Preparation: Start by ensuring that the engine is off and cool. Gather all necessary tools and materials.

2. Drain Fluid: Place a drain pan under the vehicle and remove the power steering reservoir cap to allow fluid to drain.

3. Remove Accessories: Disconnect any accessories obstructing access to the power steering pump.

4. Remove Belt: Use a breaker bar or ratchet to relieve tension on the serpentine belt and remove it from the power steering pulley.

5. Disconnect Hoses: Carefully disconnect the high-pressure and return hoses from the pump using appropriate wrenches. Be prepared for residual fluid to spill out.

6. Remove Pump: Use a socket set to remove mounting bolts securing the pump to its bracket. Once unbolted, carefully extract the pump from its location.

7. Install New Pump: Position the new power steering pump in place and secure it with bolts. Reconnect hoses tightly to prevent leaks.

8. Reattach Belt: Reinstall the serpentine belt around all pulleys according to its routing diagram.

9. Refill Fluid: Fill the power steering reservoir with ATF until it reaches the recommended level.

10. Bleed System: Start the engine and turn the steering wheel from lock to lock several times to purge air from the system. Check fluid levels again and top off if necessary.

Maintenance Tips

To ensure longevity and optimal performance of your power steering system:

  • Regularly check fluid levels and top off as needed.
  • Inspect hoses for signs of wear or leaks.
  • Flush and replace old fluid every few years or as recommended in your vehicle’s service manual.

FAQs About 1999 Ford Ranger Power Steering Pump

    • What type of fluid should I use?
      Use Automatic Transmission Fluid (ATF) Mercon V for your power steering system.
    • Why does my power steering pump whine?
      A whining noise can indicate air in the system or low fluid levels; it's common in these models.
    • How often should I replace my power steering fluid?
      It’s advisable to flush and replace your power steering fluid every few years or as indicated in your service manual.

This guide provides essential information on troubleshooting, replacing, and maintaining your 1999 Ford Ranger's power steering pump, ensuring your vehicle remains safe and easy to handle on the road.