Initial Inspection and Diagnostic Overview

CAUTION: Do not hold the steering wheel at the stops for an extended amount of time. Damage to the power steering pump will result.

NOTE: Make the following preliminary checks before repairing the steering system:

1. Inspect Tires
- Check tire pressure. Correct tire pressure is 216 kPa (32 psi) for the front and 241 kPa (35 psi) for the rear.
- Verify that all tires are sized to specification.

2. Belt and Tensioner Check
- Verify condition and correct function of belt and tensioner.

3. Fluid Level Check
- Verify that the power steering fluid level is at the full (F) mark. Add Motorcraft Mercon Multi-Purpose ATF XT-2-QDX or MERCON equivalent.

4. Air Bleeding
- 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, bleed the system. Power Steering Bleeding

External Leak Check-Typical Power Rack-and-Pinion Steering Gear:

5. External Leak Check
- With the ignition switch at OFF, wipe off the power steering pump, power steering pressure hose, power steering return hose, power steering fluid cooler and steering gear.
- With the engine running, turn the steering wheel from stop to stop several times. Do not hold steering wheel at stops. Check for leaks. Repair as necessary if leaks are observed.

6. Turning Effort Check Turning Effort
7. Verify the customer concern by operating the steering system.
8. Visually inspect for obvious signs of mechanical and electrical damage:

Mechanical
- Tire pressure, loose wheels
- Loose tie rod ends, inner ball joints
- Loose suspension struts or ball joints:
- Loose universal joints
- Loose connecting bolts on the column intermediate shaft
- Loose steering gear assembly
- Improper drive belt tension
- Binding or misaligned steering column
- Power steering pump, fluid level, hose leak or line restrictions

Electrical
- Power steering pressure (PSP) switch
- Circuitry and connections

9. If an obvious cause for an observed or reported malfunction is found, correct the cause (if possible) before proceeding to the next step.
10. If the fault is not visually evident, determine the symptom and proceed to the following symptom chart. Symptom Related Diagnostic Procedures