Power Steering System Purging

Power Steering System Purging - 3.0L, 3.5L









NOTICE: If the air is not purged from the power steering system correctly, premature power steering pump failure can result. The condition can occur on pre-delivery vehicles with evidence of aerated fluid or on vehicles that have had steering component repairs.

1. NOTE: A whine heard from the power steering pump can be caused by air in the system. The power steering purge procedure must be carried out prior to any component repair for which power steering noise complaints are accompanied by evidence of aerated fluid.

Remove the power steering fluid reservoir cap. Check the power steering fluid level and add the specified fluid as necessary.

2. Raise the front of the vehicle and support it on safety stands.

3. Tightly insert the Power Steering Evacuation Cap into the fluid reservoir and connect the Vacuum Pump Kit.





4. Start the engine.

5. Using the Vacuum Pump Kit, apply vacuum and maintain the maximum vacuum of 68-85 kPa (20-25 in-Hg).

6. If equipped with Hydro-Boost(R), apply the brake pedal twice.

7. NOTICE: Do not hold the steering wheel against the stops for an extended amount of time. Damage to the power steering pump may occur.

Cycle the steering wheel fully from stop-to-stop 10 times.

8. Stop the engine.

9. Release the vacuum and remove the Vacuum Pump Kit and the Power Steering Evacuation Cap.

10. NOTE: Do not overfill the reservoir.

Check the power steering fluid level and add the specified fluid as necessary.

11. Start the engine.

12. Install the Power Steering Evacuation Cap and the Vacuum Pump Kit. Apply and maintain the maximum vacuum of 68-85 kPa (20-25 in-Hg).





13. NOTICE: Do not hold the steering wheel against the stops for an extended amount of time. Damage to the power steering pump may occur.

Cycle the steering wheel fully from stop-to-stop 10 times.

14. Stop the engine, release the vacuum and remove the Vacuum Pump Kit and the Power Steering Evacuation Cap.

15. NOTE: Do not overfill the reservoir.

Check the power steering fluid level and add the specified fluid as necessary.

- Visually inspect the power steering system for leaks.

16. Install the power steering fluid reservoir cap.