Diagnosing Mechanical Noises From Under The Car

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If your car is making strange noises, the origin of the sounds should give you a clue about the cause of the problem. For example, noises from under the car usually (but not always) stem from these three parts of the car:

Suspension System

A noisy suspension usually means something is loose. Unfortunately, diagnosing the noise isn't easy because the noise is transmitted though the chassis and body of the car before it reaches you. However, getting a pattern to the noise may help you diagnose its cause. In fact, your mechanic is likely to ask you about the pattern when you take your car for service.

Consider these two examples:

Therefore, note when your car is making the noises (for example, is it when accelerating, braking, or towing?) and furnish your mechanic with the information.

Brake System

Even well-functioning brakes may make some noises, but you will usually be aware of your car's normal brake noises. You should suspect a brake problem if your brakes start making strange noises. In most cases, brake noises point to worn brake pads, which manufacturers use to warn motorists of brake pads that need changing.

However, there are many other causes of brake noises, such as:

Therefore, this problem requires professional diagnosis and repair.

Exhaust System

A typical exhaust system is composed of different components including resonators, muffler, pipe and many others. All these parts are positioned away from the chassis and driveline using clamps and hangers. However, the clamps and hangers can get damaged and loose, making the affected components start rattling. This noise sounds like a metal-on-metal clanking.

Additionally, the gasses your car is emitting may also make noises. For example, the exhaust may make noise if:

This is a serious problem because leaking gasses can get inside the car and affect its occupants. Not only that, but the problem with the exhaust system may also lead to reduced fuel efficiency. Therefore, have the issue diagnosed and fixed as soon as possible.

For more information about weird car noises and what they might mean, contact a company like Soundside Automotive


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