How to Replace the Power Steering Pump in a 1998 Buick Regal

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The 1998 Buick Regal base model came with a 3.8-liter six-cylinder engine and a five speed automatic transmission. Your power steering pump is driven by the crankshaft via the serpentine belt and provides hydraulic pressure to assist in turning the wheels. Your pump is located on the rear of the engine, above the fuel filter housing. When you replace the power steering pump, you have to remove the pump pulley and install it on the new pump.

Things You'll Need

  • Box end wrench set
  • Line wrench set
  • Pliers
  • Small sealable container
  • Socket set
  • Ratchet
  • Pulley remover tool
  • Pulley Installer tool
  • Torque wrench
  • Crowfoot attachment
  • 1 Quart GM power steering fluid
  • Floor jack
  • Jack stands

Removal

  • Park the vehicle on a level surface and set the parking brake. Lift the hood and support it with the hood prop rod. Draw out a sketch of the pulley system and belt routing.

  • Place the 15 mm box end wrench onto the belt tensioner pulley bolt. Lift up on the tensioner and slide the belt from around the pulley. Slowly release the pulley to its natural resting position. Remove the belt from the engine and set it aside.

  • Squeeze the pressure clamp for the power steering return line and slide it down the return hose. Hold the small container under the power steering pump and return hose. Remove the return hose from the pump with a slight twisting motion. Allow fluid to drain from the pump and return line into the small container.

  • Loosen the high pressure line fitting at the pump with a line wrench. Unscrew the fitting from the power steering pump and allow any fluid to drain into the small container. Place the lid onto the small sealable container and store it in a safe place.

  • Remove the power steering pump mounting bolts with the socket and ratchet. Remove the power steering pump from the ending and take it to the work bench. Set the power steering pump into the vise and lightly tighten the vise. Remove the power steering reservoir retaining clips by pulling them with the pliers. Remove the power steering reservoir from the power steering pump.

  • Place the pulley removal tool base onto the lip on the pump pulley. Thread the pulley remover tool push bolt into the remover tool until it contacts the pump drive shaft. Rotate the push bolt clockwise until the pulley is removed from the pump shaft. Remove the pump pulley from the pump.

Installation

  • Mount the new power steering pump in the vise and lightly tighten it. Push the pump pulley onto the pump shaft as far as you can. Thread the pulley installer tool into the pump shaft until it sits flush with the pulley. Rotate the pulley installer clockwise with a box end wrench until the pulley hub sits flush with the shaft. Remove the installer tool.

  • Coat the power steering pump reservoir o-ring with fresh power steering fluid. Push the pump reservoir into the power steering pump. Slide the clips over the reservoir and pump to secure the reservoir to the pump.

  • Hold the power steering pump in position and install the mounting bolts. Tighten the pump mounting bolts to 25 foot-pounds of torque. Slide the pump return line onto the return line nipple and slide the pressure clamp up the hose until it is 1/2-inch from the pump. Install the pressure line fitting to the pump and thread the pressure line fitting hand tight. Tighten the fitting to 20 foot-pounds with a torque wrench.

  • Route the serpentine belt around the pulley system according to the diagram made previously holding pressure on the belt at the tensioner. Lift the tensioner arm with the 15 mm wrench and slide the serpentine belt over the tensioner pulley. Slowly release the tensioner until tension is applied to the belt.

Bleeding Procedure

  • Lift the front of the vehicle into the air with the floor jack and place the jack stands under the front sub frame. Lower the floor jack until the vehicle rests securely on the jack stands.Turn the steering wheel all the way to the left. Remove the power steering reservoir cap and fill the reservoir to the full cold mark with fresh GM power steering fluid.

  • Instruct and assistant to monitor the reservoir and maintain a full level as the air is worked from the system. Turn the steering wheel back and forth from stop to stop, without hitting the stops. Continue rotating the wheel back and forth at least 20 times, until the fluid does not have a light tan appearance.

  • Start the engine and allow the engine to idle. Fill the reservoir to the cold full line and return the wheels to their center position. Return the wheels to their forward position. Lift the front of the vehicle off of the jack stands with the floor jack and remove the jack stands from under the vehicle. Lower the vehicle to the ground and allow the engine to idle for at least three minutes.

  • Test the vehicle to ensure proper operation of the pump, by turning the steering wheel back and forth. If you correctly bled the system, the steering wheel should move smoothly with no noise from the power steering system. Check the fluid level and ensure it has raised to the full hot mark. Add any fluid as necessary and install the reservoir cap. Shut the vehicle hood.

Tips & Warnings

  • Some parts stores and local repair shops accept used fluids for proper disposal.
  • Do not attempt to drive the vehicle without power steering or an improperly bleed power steering system.

References

  • Alldata: 1998 Buick Regal; Sevice and Procedures; Power Steering Pump Replacement
  • Alldata: 1998 Buick Regal; Service and Repair; Power Steering Bleeding
  • Alldata: 1998 Buick Regal; Service and Repair; Power Steering Pulley Replacement
  • Alldata: 1998 Buick Regal; Specifications; Power steering; Fluid Type
  • Alldata: 1998 Buick Regal; Specifications; Steering Gear
  • Alldata: 1998 Buick Regal; Service and Repair; Power Steering Reservoir
  • Edmunds.com: 1998 Buick Regal
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