* Wheel bearings: Worn wheel bearings are a common culprit. They'll often make a rumbling, growling, or grinding noise, especially at higher speeds or when turning. A loose feeling might be a later symptom as the bearing deteriorates.
* Loose lug nuts: This is the most dangerous possibility. Improperly tightened lug nuts can lead to a wheel coming off while driving. Check these immediately. Use a torque wrench to tighten them to the manufacturer's specifications.
* Ball joints: Worn ball joints can create a clunking or knocking sound, especially when turning or going over bumps. Loose ball joints are very dangerous and need immediate attention.
* Tie rod ends: Similar to ball joints, worn tie rod ends can cause clunking, knocking, and even a feeling of looseness in the steering.
* Suspension components: Worn struts, control arm bushings, or other suspension parts can contribute to a loose or sloppy feeling in the front end.
* Steering linkage: Problems in the steering linkage can cause looseness in the steering wheel or a knocking sound.
What to do:
1. Safety First: Do *not* drive the van until you've had it checked. Driving with loose wheel components is extremely dangerous.
2. Check the Lug Nuts: This is the easiest and most important check. Make sure all lug nuts are tight. Use a torque wrench to tighten them to the manufacturer's specifications (found in your owner's manual).
3. Professional Inspection: Take your Caravan to a trusted mechanic or tire shop for a thorough inspection of the front suspension and steering components. They can diagnose the problem accurately and safely repair it.
Don't delay getting this checked. Ignoring a "loose" feeling in your wheels can lead to serious accidents.
