1. Tire Pressure and Alignment:
* Proper Inflation: Underinflated tires will increase sidewall flex, making the van more susceptible to wind sway. Check your tire pressure regularly and inflate to the manufacturer's recommended pressure (found on the sticker on the driver's side doorjamb or in your owner's manual).
* Wheel Alignment: Improper alignment (toe, camber, caster) can significantly affect handling and contribute to wind sway. Get a professional wheel alignment done.
2. Shocks and Struts:
* Worn Suspension: Worn-out shocks and struts will allow excessive body roll and make the van more prone to sway. Replacing them with high-quality shocks and struts designed for a vehicle of its weight and age is crucial. Consider gas-charged shocks for better damping.
3. Steering and Suspension Components:
* Steering Linkage: Check for any worn or damaged components in the steering linkage (tie rod ends, ball joints, etc.). Play or looseness in these components can reduce steering responsiveness and increase sway.
* Suspension Bushings: Worn suspension bushings allow excessive movement in the suspension system, exacerbating sway. Inspect and replace any worn or damaged bushings.
4. Aerodynamics:
* Reduce Surface Area: While not easily changeable on a van, consider removing any unnecessary exterior items that might act as wind catchers (e.g., roof racks, large antennas).
* Add Aerodynamic Aids: This is less common on vans, but you might consider adding small aerodynamic devices (like a small lip spoiler at the rear) to help manage airflow. The effect may be marginal.
5. Weight Distribution:
* Even Weight: An uneven weight distribution can affect stability. Ensure the weight in the van is distributed evenly. Heavy items should be placed low and centered.
6. Driving Techniques:
* Smooth Steering Inputs: Avoid abrupt steering corrections, as these can worsen sway. Make smooth, gradual steering adjustments.
* Maintain Speed: High winds affect larger vehicles more at higher speeds. Reduce speed in strong crosswinds.
* Grip the Wheel Firmly: Maintaining a firm grip on the steering wheel will help you better control the vehicle in windy conditions.
Important Note: If you've checked all the above and the sway persists, it may indicate a more serious underlying problem. It's best to have a qualified mechanic inspect your van to rule out any structural issues or problems with the frame.
Before making any significant repairs or modifications, consult your owner's manual or a qualified mechanic. They can provide specific advice tailored to your van's condition and needs.
