1. Identify the Severity and Conditions:
* When does it happen? Is it only at low speeds, high speeds, or a specific RPM range? This helps narrow down the possibilities.
* How severe is it? Is it a slight vibration, or a violent shake that feels dangerous? A severe shake warrants immediate attention.
* Is there any other accompanying noise? Grinding, clunking, humming, or whining sounds can provide clues.
* Does it happen under different driving conditions? Does it only occur when accelerating from a standstill, or also when accelerating at higher speeds? Does it change when turning?
2. Check the Obvious:
* Tire pressure: Uneven tire pressure is a common cause of vibrations. Check all four tires and inflate them to the manufacturer's recommended pressure (found in your owner's manual or on the driver's side doorjamb).
* Tire condition: Look for uneven wear, bulges, or embedded objects in the tires. Worn or damaged tires can cause vibrations, especially during acceleration.
* Wheel balance: Unbalanced wheels are a very frequent culprit. Take your car to a tire shop for wheel balancing. They'll use a balancing machine to add weights to compensate for imbalances.
* Wheel alignment: Misaligned wheels can also cause vibrations. An alignment check will ensure your wheels are properly pointed.
3. Investigate Drivetrain Components (This requires some mechanical knowledge or professional help):
* CV joints (Constant Velocity joints): These are crucial components in FWD vehicles, connecting the transmission to the wheels. Worn or damaged CV joints often cause shaking, especially during acceleration and turning. A mechanic can inspect them for play or clicking sounds. A torn CV boot is a telltale sign of a failing CV joint.
* Drive axles/half shafts: These connect the CV joints to the wheels. Bent or damaged axles can also lead to shaking.
* Transmission mounts: Worn transmission mounts allow excessive movement of the transmission, leading to vibrations felt in the car during acceleration.
* Engine mounts: While less common for this specific symptom, severely worn engine mounts can contribute to drivetrain vibrations.
* Wheel bearings: Worn wheel bearings can cause a variety of noises and vibrations, including shaking during acceleration. A mechanic can check for play in the wheel bearings.
4. Seek Professional Help:
If you've checked the basics and the shaking persists, it's time to consult a qualified mechanic. They have the tools and expertise to diagnose the problem accurately and perform the necessary repairs. Describing the symptoms in detail will help them pinpoint the issue more efficiently.
Safety Note: If the shaking is severe or you hear unusual noises, avoid driving the car until it's been inspected by a mechanic. Continuing to drive with a damaged drivetrain component could lead to further damage or even an accident.
