Pinpoint Test D: Power Steering Moan

WARNING: This page is about a different car, the 2006 Ford Pickup, 2006 Ford F550 Super Duty, 2006 Ford F450 Super Duty, and 2006 Ford Cab & Chassis. However, it is still accessible from the selected car via links, so may be relevant.

D1 CHECK THE POWER STEERING SYSTEM
- Carry out the VEHICLE COLD SOAK PROCEDURE .
- Key in START position.
- Turn the steering wheel while the noise is occurring and listen for changes in sound pitch or loudness.
- Key in OFF position.
- Does the sound pitch or loudness change while turning the steering wheel?
Yes : Go to D2.

No : CONDUCT a diagnosis on other suspect accessory drive components.
D2 VERIFY THE SOURCE
- Key in START position.
- Place an EngineEAR probe near the power steering pump/reservoir while the noise is occurring. While an assistant turns the steering wheel, listen for changes in sound pitch or loudness.
- Key in OFF position.
- Does the sound pitch or loudness change while turning the steering wheel?
Yes : VERIFY that the supply tube to the pump is unobstructed. CHECK the fluid condition and level. DRAIN the fluid and REFILL. REFER to STEERING SYSTEM-GENERAL INFORMATION . CARRY OUT the VEHICLE COLD SOAK PROCEDURE and TEST the system for normal operation.

No : Normal system operation.