What Is That Sound? Clunks, Squeaks and Knocks Explained

Your vehicle will usually tell you something is wrong before it breaks. Here’s what the most common noises tend to mean, and which ones shouldn’t wait.

Suspension and steering noises

• Clunk over bumps: worn sway bar links, ball joints, control arm bushings or strut mounts.
• Creak or squeak when turning or going over driveway lips: dry or worn bushings and ball joints.
• Clicking when turning sharply: a worn CV axle joint.
• Humming or growling that changes with speed: often a wheel bearing.

Worn suspension parts affect handling and braking distance, and they chew up tires. Left long enough, a ball joint can separate, and that’s a serious safety issue.

Brake noises

A high-pitched squeal is often the pads’ wear indicator telling you they’re getting thin. Grinding means metal-on-metal, and you’re now damaging rotors. Get it in soon.

Engine noises

• Ticking at startup: low oil, lifters, or an exhaust manifold leak.
• Rattle at cold start that goes away: a common sign of a stretched timing chain or worn tensioners.
• Deep knock that gets louder with RPM: possible rod or main bearing wear. Stop driving it and have it looked at.

If you can, take a short video with sound and note when it happens (cold, warm, turning, braking, over bumps). It makes diagnosis a lot faster.