There are several reasons for the buzzing of cars

Determine the location of the sound first.

The noise occurs near the tires and can be a problem between the wheels and bearings, or it can be an abnormal noise caused by the friction between the brake pads and the brake disc.

If the sound occurs at the junction between the gearbox and the engine, it may be an abnormal noise caused by damage to the clutch plates and release bearings.

The sound occurs inside the gearbox, so the abnormal noise may be caused by abnormal wear of the first and second gear gears.

There can be many reasons for this, and it is advisable to go to a 4S store to have it carefully checked with professional equipment.

First of all, determine the location of the abnormal noise! If the car can be lifted with a lift, one person is in gear in the car, and the other person is under the car to judge the abnormal noise.

If the squeak occurs near the tyre and the wheels and bearings have been eliminated, then there is a possibility that the brake pads and brake discs are rubbing against each other. Generally, the abnormal noise of the brake pad is mostly due to the friction with the brake disc caused by the hard points of the brake pad, and the noise can be ignored if the sound is small; If the noise is loud, you can remove the brake pads and polish them with sandpaper before reinstalling them, and most of them can be solved.

If the sound is at the junction between the gearbox and the engine, it may be an abnormal sound caused by damage to the clutch plates and release bearings. If it is inside the gearbox, then the abnormal noise may be due to abnormal wear of the first and second gear gears.

It should be reminded that repairing a car is the same as seeing a doctor, and it is also important to find an experienced maintenance worker, so that you can definitely avoid detours and shorten the maintenance time as much as possible.

Hello answer, I have seen your question, and I am sorting out the answer, please wait a while,,, you run the car to 80km, and then slide in neutral gear, listen carefully, if the sound becomes clearer, it can be judged that there is a problem with one of the 4 wheels.

2. If the neutral gear slides and the sound disappears, it is generally a bearing failure of the engine, and the ablation of the bearings in the engine is generally a water pump, generator, and tensioner.

3. If the above situation is not a problem, the car has to be sent to the 4S shop for maintenance to find out the reason, because it is likely to be the sound of the transmission, which is more troublesome and more expensive to maintain.

The main aspects are as follows:

Solution: Some high-grade sound-absorbing foam can be added to the engine cover, which can not only suppress the vibration caused by the hood, but also absorb a lot of noise, and the effect is obvious.

2. Tire noise: tire noise is caused by the friction between the tire and the road surface when the vehicle is driving at high speed, depending on the road conditions to determine the size of the tire noise, the worse the road conditions, the greater the tire noise, and the tire irritability generated by the asphalt road and the concrete road surface is very different.

Solution: tire noise is structure-borne noise, its main generation is vibration, the most reasonable solution is to control the vibration. Adding a damping plate and a sound-absorbing pad can solve road noise and tire noise well.

3. Wind noise: Wind noise refers to the pressure of the oncoming wind in the process of high-speed driving of the car has exceeded the sealing resistance of the door and entered the car. Solution:

Add or replace the door seal, because the seal is a rubber product, which will age after a long time, and the sound insulation and sealing effect will deteriorate.

4. Body structure noise: It is mainly affected by two aspects, one is the vibration transmission mode of the body structure, and the other is the noise generated by the metal components on the body due to the action of inside and outside. Solution:

This situation rarely occurs in new cars, pay attention to check whether the screws of the body parts are loose, and generally can be solved after tightening the screws or replacing the parts.

Abnormal noise 1: the storage compartment in the car, the cluttered and scattered items in the glove compartment or the sound of loose wires installed with electronic equipment, sometimes this sound will be folded back through the roof, which will make you feel that the roof is ringing. Those who have a sunroof will think: I wipe, the sunroof will not fly.

Reason: storage compartments, scattered things in the glove box, even the sunglasses nose bridge in the glasses case will ring, whether your lighter is littered again, and whether the driving record installed in the later stage is a little loose.

Solution: Make a fist and hit a part of the car, and when it hits a certain part, there will be a sound. Determine what is around the entire area, take it out or fix it one by one, and tap it again to confirm.

If the noise disappears, it means that the source of the abnormal noise is the one you took out or fixed.

Abnormal sound 2: Whether it is low speed or high speed, abnormal noise exists, the faster the speed, the faster the frequency.

Reason: It is related to the transmission mechanism, such as tires, cages, etc.

Solution: You can go to the repair shop and get on the lift to find out the cause.

Abnormal noise three: when idling, stand in front of the car with the engine speed to make a "whoosh" noise.

Reason: If you have changed the motor pulley or have not changed the motor pulley for more than 80,000 kilometers, then the reason is very simple.

Solution: It is necessary to go to the repair shop to check that the motor pulley is likely to be aging or unqualified if it has just been replaced.

Hello, I have seen your inquiry, please wait for a moment and answer it for you immediately.

Hello, happy to answer your questions.

This sound appears on the right front tire while driving. If there is no problem, you need to check the half-shaft cage on the right, including the tire on the right, to see if there is a lot of wear and tear, and to see if there is any tire noise. Mainly check these aspects, as well as the side of the engine, the belt pulley bearing tensioner of the engine in this position, these parts need to be checked.

If there is a problem with the bearing, it will sound when you step together, lift the car up, turn the wheel, and the bearing can be heard. If it is buzzing when running, the speed of the car is slow and you can't hear clearly, the faster it is, the louder it is, most of it is the problem of tire wear, commonly known as eating tires. My 13-year-old Passat, like you, buzzed as soon as the rear wheel passed fifty or sixty, and the faster it was, the higher the frequency, and I went to the repair shop to see that the bearings were not.

The buzzing of the car's license may be caused by a damaged bearing.

The buzzing of the car while driving is 80% likely to be a problem with the wheel bearings.

Abnormal noise**1: storage compartment. I believe that most car owners do not have the habit of tidying up the storage compartment, the car has not been sorted out for several years The storage compartment must be full of messy items, so that no matter where the car is driving, as long as the engine opens the storage compartment The items in the compartment will follow the engine "beating", and the abnormal noise you hear is likely to be the vibration of the storage compartment.

In fact, it is very simple, everyone only needs to observe that when the speed increases, the louder the sound, it proves that the car transmission system is faulty. The most effective solution is to see if the car tires have a puncture, if there is, it is recommended that you go to a regular car 4S shop for maintenance.

Abnormal noise**3: abnormal noise outside the car. If the abnormal noise heard is from outside the car, we should first look at whether the doors and windows of the car are normal, and at the same time see if there are things in the trunk.

In addition, you should also check whether there is any debris around the wiper, and clean it up in time if there is one, so as not to affect the normal use of the wiper.

You must know that the service life of car pulleys is about eight years, and if you have not replaced the car pulleys for more than eight years, it will make a "cough" sound in the cold winter. If you want to change the pulley, it is recommended that you go to a regular car 4S shop to replace it, and do not do it yourself, otherwise improper operation will cause damage to the car.

Hello, dear, the reason why the car is buzzing:1Tire pressure is too high:

If the tire pressure is too high, it will shorten the area where the tire touches the ground, which is prone to buzzing. Therefore, you need to adjust the tire pressure of the car when driving, especially if the tire pressure is too high, there will be a risk of puncture, and it is not possible to ensure the best safe crack driving. If the tire pressure is too high, comfort will also suffer.

2.abnormal wear of car tires; When there is abnormal wear on the tire, it is easy to buzz because the tire is uneven and does not have the same contact area with the ground. At the same time, the tires of the car will also rub against the ground, so there will be noise.

If it is a buzzing sound caused by abnormal tire wear, partners should deal with it immediately to prevent abnormal tire wear from causing greater car failure. 3.Wheel bearing damage:

Due to the long period of use, the wheel bearings may be worn, and there will be a buzzing sound after excessive wear. After the sound in the car should be dealt with immediately, do not drive the car with potential safety hazards on the road, easy to have failures, not to mention, there is no good guarantee for safe driving, in the usual driving process, to immediately do a good job of maintenance and inspection of the car, find that the abnormal condition is repaired immediately, if you can't solve it, go to a professional repair shop or pure is 4S shop to deal with it.

Featured Q&A: What is the reason for the loud sound of the car.

1.The engine overheated and caused the engine to lose power. If the engine is so active for so long that the surface overheats, the cooling system will strike.

The first thing to do at this time is to check the cooling system, if there is a problem with the air conditioning system, it may lead to a blockage in the exhaust gas, because there is a high chance that the vacuum pipe will break. At this time, steam or hot air will come out of the engine, which will make some "wow" sound. So as soon as you hear this sound, it is time to check if there is a problem with the cooling unit.

Of course, if the sound is made in the place of the exhaust pipe, it proves that there is a problem with the exhaust pipe first, and it is necessary to check the exhaust pipe first.

2.There is a problem with the inside of the engine, such as a clogged valve. In the process of driving, sometimes we don't see anything wrong with the appearance, but we find that the throttle is not strong when refueling.

It could also be a problem with the engine. Because when the throttle is added, the engine speed is actually increased, but the speed is not raised, which indicates that there is a problem with the inside of the engine. At this time, it is also necessary to look at the cooling system to see if the coolant is normal.

Then check the oil pressure gauge to see if it's because of the oil pressure, or if it's an ignition problem. There is also the problem of clogged internal valves and so on. If there is a loud noise when accelerating or decelerating, then you have to look at the generator shaft, or even the water pump, power steering pump, etc.