* Worn-out motor mounts: These isolate the engine from the chassis. Worn mounts allow excessive engine movement, leading to shaking, especially noticeable at idle and low speeds.
* Balance shaft issues: The Cavalier's engine may have balance shafts to reduce vibrations. If these are malfunctioning or damaged, it can cause a noticeable shake.
* Transmission problems: Issues within the transmission, such as worn mounts, low fluid, or internal problems, can cause vibrations that are felt more strongly at lower speeds.
* Wheel balance/alignment: Uneven tire wear, bent rims, or improper wheel alignment can cause shaking, especially noticeable at low speeds. Check for any unusual tire wear patterns.
* Driveshaft issues: Problems with the driveshaft, such as worn U-joints or out-of-balance components, can cause vibrations felt throughout the car, particularly at lower speeds.
* Brake issues: Warped rotors or sticking calipers can cause shaking, especially when braking at low speeds. However, this would typically be more noticeable during braking itself.
* Steering components: Worn tie rod ends, ball joints, or other steering components can create vibrations that are felt in the steering wheel and throughout the car, especially at low speeds.
To diagnose the problem, you should:
1. Check the engine and transmission mounts: Look for any obvious signs of damage or excessive movement.
2. Inspect tires and wheels: Check for uneven wear, bent rims, and ensure proper inflation.
3. Have the wheels balanced and alignment checked: This is a crucial step to rule out wheel-related issues.
4. Check the brake rotors and calipers: Look for warping or sticking.
5. Check the fluid levels: Ensure your engine oil and transmission fluid are at the correct levels.
6. Take it to a mechanic: If you can't identify the problem yourself, a qualified mechanic can perform a proper diagnosis and repair.
It's important to get this checked out sooner rather than later. Ignoring the shaking could lead to more serious and costly damage.