Your steering wheel shaking when you accelerate can be caused by several common issues related to your tires, brakes, drivetrain, or suspension. Here are the main reasons:
- Tire problems : Unbalanced or unevenly worn tires often cause steering wheel vibrations during acceleration, typically noticeable at speeds above 40-50 mph. This is one of the most frequent causes and can be resolved by tire balancing or replacement.
- Bent or damaged axles : A bent axle from hitting curbs or accidents can cause shaking when you accelerate. The axle needs to be replaced to stop the vibration.
- Worn or dirty spark plugs : Dirty spark plugs can cause engine misfires that shake the car during acceleration.
- Stuck brake calipers : If a brake caliper is stuck, it can cause vibrations felt in the steering wheel, especially between 40 and 50 mph, and worsen with speed.
- Driveshaft or CV joints : Problems with the driveshaft or damaged CV joints can cause shaking when accelerating, as these components transfer engine power to the wheels.
- Motor mounts : Broken or worn motor mounts that secure the engine can cause vibration felt through the steering wheel when accelerating.
- Suspension or wheel bearing issues : Worn suspension components or damaged wheel bearings may also contribute to steering wheel shake, particularly noticeable when turning or accelerating.
- Wheel misalignment : Misaligned wheels cause uneven tire wear and vibrations that can be felt in the steering wheel.
It's important to get the issue diagnosed promptly as continuing to drive with these problems could cause further damage. A mechanic will typically start with checking tires for balance, condition, and alignment, then inspect axles, brakes, driveshaft, motor mounts, and suspension components to find the cause of shaking during acceleration.
