* Worn CV Axle (Constant Velocity Axle): This is the most common cause. A worn CV joint will produce a vibration, especially noticeable at higher speeds or during turns. You might hear clicking or popping sounds as well. Inspect the CV boots for tears – if they're torn, grease will leak out, leading to premature wear.
* Unbalanced Wheel or Tire: A simple yet often overlooked issue. An unbalanced wheel or tire will cause vibrations, especially at specific speeds. Have your wheels and tires balanced by a tire shop.
* Bent Wheel or Rim: A bent wheel will cause vibrations and may be apparent upon visual inspection. Check for any obvious bends or damage.
* Worn Wheel Bearing: A worn wheel bearing will produce a humming or rumbling noise, often accompanied by a vibration, especially when turning.
* Brake Rotor Problems: A warped brake rotor will cause pulsating vibrations when braking, but it *could* also contribute to a constant vibration if the warp is severe.
* Ball Joint Issues: A worn ball joint can lead to vibrations, often accompanied by clunking or knocking sounds, and may also affect steering.
* Tie Rod Ends: Similar to ball joints, worn tie rod ends can contribute to vibration and handling issues.
* Suspension Components: Worn shocks, struts, or other suspension components can lead to a variety of vibrations and handling problems.
How to Diagnose:
1. Visual Inspection: Carefully inspect the tire, wheel, CV boot, and suspension components for any obvious damage.
2. Test Drive: Pay attention to the speed at which the vibration occurs and any accompanying sounds (clicking, humming, rumbling). Does it happen only when turning? Does it change with braking?
3. Professional Inspection: The best way to diagnose the problem accurately is to take your Windstar to a qualified mechanic. They have the tools and expertise to pinpoint the source of the vibration and recommend the appropriate repair.
Do not drive the vehicle if you suspect a serious mechanical problem. Continuing to drive could worsen the damage and potentially lead to a dangerous situation.
Remember, addressing the underlying cause is essential. Simply balancing the tires or rotating them might temporarily mask the problem, but it won't solve the root issue.
