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5 Causes of Driving Noise and How to Fix It

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5 causes of driving noise and how to fix it

The small noises and vibrations of the car while driving come for many reasons. Let’s check out 5 causes of driving noise and how to fix it.

When the machine makes a strange noise, it is good not to ignore these audible warnings, especially if they are persistent. That’s why this article is about 5 causes of driving noise and how to fix it.

The complexity of a car triggers noise ranging from beats to squeaks to hisses, each of which can also manifest in different ways. Furthermore, some sounds may also be due to the components of the passenger compartment.

5 Causes of Driving Noise

Several types of vibrations can occur inside the vehicle. Some can be perceived through the steering wheel, others through the brake pedal or the gas pedal, still others through the seat. There are also vibrations due to specific speed ranges that appear when going faster or slower.

There are five leading causes of driving noise as follow:

Vibration During Braking

This problem is widespread but equally easy to solve. Over time, brake rotors tend to deform slightly, which can cause the brake pedal to vibrate slightly when braking.

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Vibration during braking

Stationary Vibration

Stable vibration occurs when the car vibrates at deficient speed. The reason is due to worn or damaged exhaust pipes. It may also come from the problem with the engine, a worn spark plug or a clogged injector.

Vibration During Speed Acceleration or Uphill Driving

This vibration cause is often attributed to the fact that the engine or transmission overwhelmingly operates. This problem is quite common in front-wheel drive vehicles.

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Speed acceleration

Vibration Perceived from Below Parts

Typically, this kind of vibration starts from the bottom of the seat and comes from the shock absorbers and tires. The cause may be due to a flat or worn tire.

These vibrations may also appear in specific speed ranges and go away when you accelerate or slow down the motor. Or they may progressively get worse as you accelerate the vehicle speed.

Vibrations Perceived Through the Steering Wheel

When the steering wheel vibrates, it can be more complicated to figure out where the problem comes. The vibrations may come from an off-axis wheel or may be due to worn uprights.

Vibrations can also result from worn shock absorbers, especially when the car vibrates during a curve.

5 Causes of Driving Noise and How to Fix It 1
Steering wheel vibrates

How to Fix Driving Noise

There are countless reasons for the driving noise such as some loose parts, squeaky brakes or dated suspensions. When it comes to environmental or road-noise, it is hard to fix them.

To attenuate or eliminate noise, soundproof mats can be incorporated into the car is a good idea. Also, the frame can be stiffened, the rigidity of the elastomeric parts can be changed, or the wheels can be rebalanced.

Here are ways to fix different types of driving noises.

Strong Vibrations

If the machine has strong vibrations, the causes may be due to the wheels and to the transmission shaft if the car is rear-wheel drive. Here are the ways to fix it:

Check the Wheels

If the vibrations follow a regular frequency and are also reflected on the steering wheel, the most frequent cause is due to the wheels. Therefore, they can be caused by tires that have ovalized after a long period.

In this case, your tires need to be replaced by new tires. You want to make your journey quiet and comfortable, you need to buy dedicated quiet tires.

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Check the wheels carefully

To solve the problem, it is sufficient to travel a few kilometres after returning the inflation pressure to the value indicated by the manufacturer.

Car Workshop

If the vibrations are more noticeable on the car floor or through the seats, the cause is almost always due to the no longer balanced transmission shaft, wear of the relative joints or breakage of the elastic dampers. In all these cases, workshop intervention is required.

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Go to a car workshop

Mechanic’s Consultation

Anomalous vibrations often come from the engine of a much higher entity than those typically perceived in the passenger compartment. In this regard, it should be said that engines with few cylinders (2 or 3) commonly cause more vibrations than those with a more significant fraction.

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Consult the mechanic

For the architecture, the motors are always mounted on elastic supports, sometimes hydraulic, and in some cases also combined with torsional dampers coaxial to the crankshaft. These kinds of vibrations are still well perceptible and identifiable by the driver, but can only be solved by contacting a mechanic.

Noisy Hydraulic Tappets

An inevitable noise from hydraulic tappet is typically natural. If the sound remains even in high temperature, you can try to decrease it with a high viscosity oil or with an additive. They act as a solvent and must be put before changing the oil.

If even these lubrication interventions do not give results, you can try to have the carbon deposits cleaned and repaired by a professional garage.

Strange Noises from Car Dashboard

The causes can be various. One of the most frequent is due to the rubbing of plastic parts between different elements of the dashboard. Especially if the car is already a few years old, time may have hardened the materials.

In these cases, assuming that it is possible to identify a single source of the squeaking, grease can be used for the door. But it is useless if the noise comes from air conditioning vents.

Noises could also be caused by the grids of the tweeters of the audio system. In this case, remove them with the help of a screwdriver or a very resistant plastic tab, and then reposition them.

Bottom Lines

The article has summarized 5 causes of driving noise and how to fix it. A repair on your own is possible if you have the necessary tools and are familiar with the technology of the vehicle. 

Otherwise, you should urgently have a specialist deal with noises that become louder. If you ignore the disturbing noises in the car for too long, you risk a major technical defect in your vehicle.

For a specific examination, the mechanics will rely on acoustic cameras, dynamometers and accelerometers to isolate and identify the source of the noise. In any case, since it is not easy for everyone to evaluate where a sound comes from, it should be consulted by a specialist.

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