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What would cause a 1996 Chrysler mini van to vibrate when you accelerate above 45MPH and the steering wheel shakes?

1. Wheel Imbalance

Unbalanced wheels can cause vibrations that are felt through the steering wheel and floorboards. This is a common problem that can be easily fixed by having your wheels balanced.

2. Driveshaft Issues

A damaged driveshaft, driveshaft U-joints, or transmission slip yoke could also cause the Chrysler minivan to vibrate. The driveshaft is responsible for transferring power from the transmission to the wheels, so any problems with it can cause vibrations.

3. Axle Problems

Problems with the vehicle’s axle can cause vibrations at higher speeds.

4. Worn Suspension Components

Worn suspension components, such as tie rods, ball joints, or control arms, can also lead to vibrations. These components are responsible for keeping the wheels aligned and stable, so any damage or wear can cause them to vibrate.

5. Engine Mounts

Worn engine mounts can allow the engine to move around excessively, causing vibrations. This is a less common cause of vibrations, but it can be problematic if the engine mounts are in bad condition.

To determine the exact cause of the vibrations in your Chrysler minivan, it is best to have it inspected by a qualified mechanic or automotive technician. They can identify the source of the problem and recommend the appropriate repairs or maintenance.