Early Signs (often ignored until it's too late):
* Groaning, growling, or rumbling noise: This is the most common early symptom. The noise usually increases with speed and might be more noticeable when turning.
* Vibration in the steering wheel or floor: A failing bearing creates uneven rotation, causing vibrations felt throughout the vehicle.
* Wobble in the wheel: You might feel a slight play or looseness in the affected wheel.
As the failure progresses:
* Increased noise: The noise gets louder and more persistent.
* Increased vibration: Vibrations become stronger and more noticeable.
* Wheel play: The wheel becomes noticeably loose.
* Hot wheel hub: Excessive friction generates heat, which you might feel by touching the wheel hub (be careful, it will be extremely hot!).
* Seized bearing: The bearing can completely seize, causing the wheel to lock up. This is a serious safety hazard and can lead to a loss of control, potentially resulting in an accident.
Consequences of a complete failure:
* Loss of control: A seized bearing will cause the vehicle to pull sharply to one side, potentially leading to a collision.
* Tire damage: A locked wheel can cause the tire to overheat and even shred.
* Axle damage: In severe cases, the stress from a failed bearing can damage the axle.
* Hub damage: The wheel hub itself can be damaged, requiring replacement.
In short: Ignoring the early warning signs of a failing wheel bearing on your 2002 Ford Windstar is extremely dangerous. If you notice any of the symptoms listed above, have the vehicle inspected and the bearings replaced immediately by a qualified mechanic. It's a relatively inexpensive repair compared to the potential cost of an accident.
