- Engine mounts: Worn or damaged engine mounts can cause the engine to move excessively when you press the gas pedal, leading to shaking.
- Spark plugs or ignition coils: Faulty spark plugs or ignition coils can cause misfires, which can lead to shaking.
- Fuel injectors: Clogged or dirty fuel injectors can cause the fuel mixture to be incorrect, leading to shaking.
- Vacuum leaks: A vacuum leak can cause the engine to run lean, which can lead to shaking.
- Driveline issues: Problems with the transmission, driveshaft, or axles can also cause shaking.
* A tire is out of balance. This is one of the most common causes of a shaking car. When a tire is out of balance, it will cause the car to shake at certain speeds. You can usually tell if a tire is out of balance by looking at the tread. If the tread is unevenly worn, then the tire is likely out of balance.
* A wheel alignment is out of spec. When a car's wheel alignment is out of spec, it can cause the car to shake. This is because the tires are not pointing in the correct direction, which causes them to put uneven pressure on the road. You can usually tell if a car's wheel alignment is out of spec by looking at the steering wheel. If the steering wheel is not centered when the car is going straight, then the wheel alignment is likely out of spec.
* A bad CV joint. A CV joint is a part of the car's drivetrain that connects the wheels to the transmission. When a CV joint goes bad, it can cause the car to shake. You can usually tell if a CV joint is bad by listening for a clicking or popping noise when you turn the car.
* A bad wheel bearing. A wheel bearing is a part of the car's suspension system that allows the wheels to rotate smoothly. When a wheel bearing goes bad, it can cause the car to shake. You can usually tell if a wheel bearing is bad by listening for a humming or grinding noise when you drive.
* A bad driveshaft. A driveshaft is a part of the car's drivetrain that connects the transmission to the wheels. When a driveshaft goes bad, it can cause the car to shake. You can usually tell if a driveshaft is bad by listening for a knocking or clunking noise when you drive.
* Engine troubles: This is another more serious cause of a shaking car. Any number of engine issues, from a bad spark plug to a more serious transmission issue, could be the cause of the shaking. If you suspect an engine problem is the cause of the shaking, it is best to take the car in to a mechanic to be diagnosed and the issue fixed.
