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  • karjunkie 09/20/08 11:04 am PST

    A growling like noise when turning left or right is usually the power steering pump. Check the fluid and make sure it is at the correct level. It is in a small plastic bottle inside the engine compartment. Also check the belt running to the pump from the engine. The easiest way to check if this is the noisy part is to have a friend turn the wheel with the engine running while you stand in front of the vehicle with the hood up and listen for the growling. If it is not the PS pump, it could be a bad wheel bearing. The wheel bearing would only make a noise when the vehicle is moving while the PS pump will make it even when you are parked and moving the steering wheel left and right.

  • 17mm 03/13/13 10:27 pm PST

    The 2003 Expedition I diagnosed today (3/14/13) with 30k miles had the same growl noise ~ also felt in the steering wheel when starting / stopping (SLOW SPEED) while turning. Owner was complaining that it was tires or front end. He said it sounded much like a tire rubbing the fender. Closer inspection revealed that it was the rear axle making the noise. I believe it is going to be related to the Posi Track rear axle clutch. Hope to dig in and find more next week when he returns.


    Check my source link for a very interesting read on the issue.

    this FORD TSB was posted on 9/15/2003.

    Article No.
    03-19-8 STEERING - LIMITED SLIP AXLE CHATTER, SHUDDER, BINDING SENSATION, OR VIBRATION DURING LOW SPEED TURNS
    VIBRATION - LIMITED SLIP AXLE CHATTER, SHUDDER, BINDING SENSATION, OR VIBRATION DURING LOW SPEED TURNS
    AXLE - LIMITED SLIP AXLE CHATTER, SHUDDER, BINDING SENSATION, OR VIBRATION DURING LOW SPEED TURNS

    FORD: 2003 EXPEDITION
    LINCOLN: 2003 NAVIGATOR


    ISSUE:
    Some 2003 Expedition/Navigator equipped with the 9.75" or 8.8" limited slip rear axle may exhibit chatter, shudder, a binding sensation, or vibration during low speed turns. The sensation may appear to originate from the front axle, or the steering gear.

    ACTION:
    To service, first verify the condition. With the vehicle at cold startup. Ensure that the vehicle is in 2WD, to isolate the rear axle. Turn the wheel fully right (or fully left) and then accelerate the vehicle. If the condition is verified to be in the rear axle, replace the limited- slip clutch pack.

    Source: http://www.ford-trucks.com/forums/13171
    2...

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