Coilover Clunk At Low Speed, Coilover Clunk Over Bumps : Understanding The Causes And Solutions

Coilovers are a popular suspension upgrade for many vehicles, providing perfect handling, adjustability, and a more aggressive stance. However, a common issue that coilover users may encounter is the dreaded “Coilover clunk.” This unsettling noise can occur both at low speeds and over bumps. Compromising the smoothness and comfort of the ride.

This article will dive into the causes behind coilover clunk.  And explore practical solutions to eliminate or minimize this bothersome problem. Whether you’re a coilover enthusiast or seeking to resolve an irritating suspension noise. Understanding the root causes and implementing appropriate remedies can help restore your vehicle’s ride quality to its optimal state.

Three Main Causes For The Coilover Clunk At Low Speed And Coilover Clunk Over Bumps

Causes of Coilover Clunk at Low Speed

Loose or Worn Mounting Hardware

  • Over time, the nuts, bolts, and other fasteners that secure the coilovers to the vehicle’s chassis can become loose, leading to excessive movement and resulting in clunking noises.

Insufficient Damping

  • When the damping force is not adequate in the controlling stage, the coilovers can oscillate and create a clunking sound, especially when encountering uneven surfaces or during low-speed maneuvers.

Defective or Worn Suspension Bushings

  • Suspension bushings are essential components that provide cushioning and absorb shocks. 
  • If these bushings become worn or damaged, they can introduce excessive play in the suspension system, leading to clunking noises when the coilovers are at low-speed movements.

Causes of Coilover Clunk Over Bumps

Insufficient Rebound Damping

  • The rebound damping controls the rate at which the coilovers extend after compression. 
  • If the rebound damping is too low, the coilovers may rebound too quickly when encountering bumps, causing them to make a clunking noise upon sudden extension.
  • The sway bar links connect the suspension components to the sway bar, which helps stabilize the vehicle during cornering. 
  • If these links are out of shape or worn, they can create a clunking sound when the coilovers face bumps, as they fail to control the suspension movement effectively.

Binding or Sticking Suspension Components

  • When the suspension components, such as control arms or ball joints, become binding or sticking due to dirt, rust, or lack of lubrication, it can lead to irregular movement and generate clunking noises when the coilovers traverse bumps.

Solutions for Coilover Clunk at Low Speed

  • Ensure that all nuts, bolts, and fasteners are ideally in a tight position. 
  • If any hardware is worn or out of shape, replace it with new ones to eliminate any potential sources of clunking.
  • Suppose the coilovers have adjustable damping settings, try adjusting the damping to achieve the optimal balance between comfort and performance. 
  • If worn or out-of-shape suspension bushings are on the spot as the cause of the clunking, consider replacing them with new ones. 
  • High-quality aftermarket bushings or OEM replacements can restore the proper cushioning and eliminate unwanted play in the suspension system.

Solutions for Coilover Clunk Over Bumps

  • Increase the rebound damping slightly to slow down the extension of the coilovers after compression, providing better control and reducing the chances of clunking noises.
  • Inspect the sway bar links for any signs of wear, such as excessive play or visible damage. Replace them with new ones if necessary to restore proper functionality and minimize clunking.
  • Suppose the suspension components are severely worn or damaged. In that case, replacement may be necessary to eliminate clunking noises caused by irregular movement.

FAQs For Coilover Clunk At Low Speed, Coilover Clunk Over Bumps

Q: Can coilover clunk at low speed affect the vehicle’s performance?

A: Low-speed coilover clunk may not directly impact performance but can compromise ride quality and comfort. 

Q: Can I adjust the damping settings myself to eliminate clunking?

A: If your coilovers have adjustable damping settings, you can experiment with different settings to find the optimal balance. Start by increasing the damping slightly and observe the impact on the clunking noise. Fine-tuning the settings may help alleviate the issue.

Q: Can regular maintenance prevent coilover clunk?

A: Yes, regular maintenance can help prevent coilover clunk. Inspecting and tightening mounting hardware, maintaining proper damping settings, and replacing worn bushings or components as needed are all essential for keeping the suspension system in good working condition and minimizing clunking noises.

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