As an expert in automotive mechanics, I've encountered a variety of issues that can lead to a steering wheel shimmy. This condition is characterized by an unsteady or vibrating sensation in the steering wheel, which can be both uncomfortable and potentially dangerous if not addressed. There are several factors that can contribute to this issue, and I'll delve into them in detail.

1. Tire Imbalance: One of the most common causes of a steering wheel shimmy is an imbalance in the tires. When a tire is not properly balanced, it can create a force that vibrates the wheel as it spins. This can be exacerbated by high speeds, where the imbalance becomes more noticeable.

2. Wheel Out of True: If a wheel is bent or warped, it can cause a significant vibration. This is often the result of an impact, such as hitting a pothole or curb at high speed. The wheel's misalignment with the tire can lead to a shimmy.

3. Worn or Damaged Suspension Components: The suspension system is designed to absorb road shocks and maintain tire contact with the road. If components like ball joints, tie rods, or control arms are worn or damaged, they can cause the wheel to move unevenly, leading to a shimmy.

4. Loose or Damaged Steering Components: Issues with the steering system, such as loose tie rods or worn steering box components, can also result in a shimmy. The steering system must be precise and well-maintained to ensure smooth operation.

5. Wheel Bearings: Wheel bearings are crucial for smooth wheel rotation. If these bearings are worn out or damaged, they can cause a vibration that you can feel through the steering wheel.

6. Brake Issues: Sometimes, the problem is not with the wheel itself but with the brake system. Warped brake rotors or uneven brake pad wear can cause vibrations that are transmitted through the wheel to the steering wheel.

7. Drive Belt and Pulley Issues: In some cases, a problem with the drive belt or pulleys can cause a vibration that is felt in the steering wheel. This is more common in vehicles with front-wheel drive or all-wheel drive systems.

8. Jeep --Death Wobble--: As you mentioned, the Jeep --Death Wobble-- is a specific condition that can cause a steering wheel shimmy. It's typically caused by loose steering and suspension components, which can lead to a dangerous oscillation in the steering.

9. Worn Front Track Bar Bushings: In older Volvo 240 models, a common cause of shimmy is worn front track bar bushings. These bushings help maintain the alignment of the front axle, and when they wear out, they can cause the wheel to move in a way that leads to a shimmy.

10. Other Vibration Causes: There are other less common causes of steering wheel shimmy, such as wheel weights that are improperly installed, tires that are not seated correctly on the wheel, or even manufacturing defects in the wheel or tire.

Diagnosing and fixing a steering wheel shimmy requires a systematic approach. It's important to inspect the tires, wheels, suspension, steering, and brake systems to identify the root cause. Once the source of the problem is identified, the appropriate repairs can be made to restore the vehicle's handling and safety.

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Something else may cause steering wheel shimmy. Common problems include the Jeep --Death Wobble,-- caused by loose steering and suspension components, and older Volvo 240 shimmy caused by worn front track bar bushings. ... Other vibrations can have similar causes, related to wheels, tires, brakes, or suspension.Nov 13, 2017read more >>