Diagnosing Your Car's Knocking Noise When Turning and Accelerating

Have you noticed a knocking noise in your car when making a full turn or accelerating? This issue can arise from several sources, and understanding the potential causes is crucial for maintaining your vehicle's performance and safety. In this article, we will explore common reasons for this noise and provide guidance on how to address the problem effectively.

Common Causes of Knocking Noise During Turning and Accelerating

When driving, a knocking noise that occurs only during turns and acceleration can be caused by a variety of mechanical issues. Let's take a closer look at some of the primary culprits:

CVT Joints (Constant Velocity Joints)

CV joints are particularly relevant in vehicles with front-wheel drive. A worn or damaged CV joint can produce a knocking or clicking noise during turns, especially when accelerating. These joints allow the wheels to rotate at different speeds, which is essential for smooth cornering and high-speed driving. If you suspect a CV joint issue, it is recommended to have a mechanic inspect the vehicle to ensure proper diagnosis and repair.

Suspension Components

Worn or damaged suspension parts, such as control arm bushings or struts, can also cause knocking noises when the vehicle's weight shifts during turns. As these components wear down, they lose their ability to absorb shocks and vibrations efficiently. A thorough inspection by a professional can help identify and resolve this issue.

Wheel Bearings

A failing wheel bearing can create a noise when turning, particularly when the load on the bearing changes. This is often accompanied by vibration or shaking. The wheel bearing is a critical component for smooth and controlled movement, and its failure can lead to increased risk and poor handling. Proper maintenance and timely replacement can help prevent such issues.

Engine or Transmission Mounts

Worn or broken engine or transmission mounts can result in excessive movement, leading to knocking noises during acceleration or turning. These mounts are designed to stabilize these components and prevent unwanted vibrations. When they become damaged, the engine and transmission can move excessively, causing noise and potential performance issues.

Tires

Uneven tire wear or improper inflation can also lead to knocking noises during turns. If the tires are making contact with other components, this can create additional noise. Ensuring that your tires are in good condition and properly inflated can help reduce these issues.

Drivetrain Issues

Problems with the differential or other drivetrain components can also produce knocking noises under specific conditions. The differential is responsible for distributing power evenly between the wheels, and its failure can significantly impact the vehicle's handling and noise levels.

Seek Professional Help: To accurately diagnose the issue, it is best to have a mechanic inspect the vehicle. They can perform a thorough assessment and determine the exact cause of the noise. Early identification and repair can prevent further damage and ensure the longevity of your vehicle.

Additional Considerations for Loud Knocking Noise

If you are experiencing a loud knocking sound, especially when accelerating, there are a few more possibilities to consider:

A defective timing belt or chain A faulty pulley Bad spark plugs faulty gasket or seal problems with the valve train system issues with the throttle body transmission problems

Any of these issues can contribute to the loud knocking noise and should be addressed promptly. The safest course of action is to take your car to a professional repair shop to have it inspected and repaired if necessary.

Conclusion and Final Thoughts

The knocking noise you are experiencing in your car when making a full turn and accelerating is likely due to a specific mechanical issue. While a faulty CV joint is a common cause, other components such as suspension parts, wheel bearings, and engine/transmission mounts can also be responsible. By taking your vehicle to a reputable mechanic, you can receive a proper diagnosis and the necessary repairs to restore your car's performance and safety.