Verify that the power steering fluid level is at the full (F) mark. Add Motorcraft MERCON Multipurpose ATF XT-2-QDX or MERCON equivalent.
Verify that there is no air in the power steering system. Run the engine until it reaches normal operating temperature. Turn the steering wheel to the left and right several times without hitting the stops. If any air bubbles are present, refer to Purging.
External Leak Check-Typical Power Rack-and-Pinion Steering Gear
External Leak Check - Typical Power Rack-and-Pinion Steering Gear