When the car brakes quickly, the brakes will make a noise, what is the reason?

The abnormal brake noise of the new car is normal, and the abnormal noise will disappear after more than 200 kilometers of running-in, so there is no need to worry about it at all.

2.Replace the new friction disc or a new brake disc, and after replacing the new brake disc, it cannot have a good run-in with the friction pad, and there will be abnormal noise.

3.Sometimes hard materials such as sand and gravel will make abnormal noises when they enter the gaps between brake discs and brake pads, which generally exist in the initial stage and do not need to pay attention to such abnormal noises. Generally, after wading, or walking on mud roads, etc., the hard sand and gravel will run into the gap of the braking mechanism, and there will be stagnation when the braking system is working, and the brake will make abnormal noise when running to the gap of the brake disc.

4.Poor fixing of brake calipers and brake discs is also an aspect of abnormal brake noise, and it will also cause brake eccentricity.

5.Too much wear of the brake disc or the breakage of the brake pads with little wear can also cause abnormal brake noise.

The main reasons for abnormal brake noise are as follows:

1. If a new car, because the brake pads and brake discs are new, and they are still in the run-in period, there may be a slight sound, which is normal, don't care about it, it will automatically disappear after hundreds of kilometers.

2. There are foreign objects between the brake pads and the brake disc, such as small particles such as sand and small stones entering the disc, which will cause a slight sound.

3. When it rains or there is water in the brake disc, the brake pads and brake disc are relatively wet, and the brake is prone to vibration when the brake is low speed, which is normal, and it will be fine after the water is dry.

4. There is a vibrating whining sound on the reversing brake. This is generally caused by the change of friction lines, which are usually forward braking, but now reversing, the lines are wrong, so it is easy to make abnormal noises. This kind of low-channel situation will occur, and high-speed is generally not available.

This is also normal, just rub it a few more times.

5. The brake disc and brake pad are glued together due to rust, causing abnormal noise. This generally happens after driving in rainy days, the car is parked for a few days and is useless, the brake disc and brake pads are rusted and stuck together, and it will make abnormal noises when starting again, which is also normal.

It is normal for the brake disc and disc to have a slight noise due to the friction of the disc when braking.

There is a very audible sound:

Reason: 1. The brake disc has a hard point, which is only the hard material at this point when it is manufactured, it doesn't matter, but the degree of wear of the piece is slow, and it will be fine if it is worn past this point. Your brake pads earned. The time of use is longer than the rest is the brake pads.

2. The disc is seriously worn, and there is a situation where the iron touches the iron, and there will be an obvious sound at this time.

Solve the problem: 1 If it is the cause of the hard point, the easiest way is to step on the hard point when the speed of the sports car is about 5 kilometers backwards, and you can generally remove the hard point. The sound is not too loud, it is recommended or ignored, and it has no effect on driving.

2. If it is iron-to-iron, the disc should be replaced immediately. In addition, at this time, the brake of the instrument does not alarm, and the sensor connected to the brake fault light should be checked at the same time.

What's going on with the sizzle of car brakes.

Hello.. How many kilometers the car has traveled. Generally, if there is an abnormal sound on the brakes. There are two reasons for this. First, the brake pads are made of hard material. Two. The car's brake pads were thin. It's grinding to the alarm line.

The reasons for the noise generated when the car brakes are as follows:1. When the cold car first starts, the brakes are harsh at first.

This happens mostly in the morning, especially in winter mornings, when there is moisture on the brake discs, and the sound is particularly noticeable when you first drive; 2.There is a sound when braking, it may be that there is a small stone empty in the middle of the brake disc. When the vehicle is moving, it makes a regular crashing sound to remove small stones or foreign objects.

3.When you hit the brakes, it makes the sound of grinding iron. This is mainly due to the fact that the brake pads are worn to the position of the safety line.

This is a problem that most drivers tend to overlook. At first, it was a very small sound. As it gets bigger, the brake pads wear out.

Finally, the iron on the brake pads and the brake discs fully provide the braking function. At this point, the brake pads and discs need to be replaced. 4.

There is a creak when the brakes are applied. At this time, most of the situation is mainly due to the sudden brake of the owner when driving at high speed, and the ABS function of the vehicle intervenes to avoid the accident caused by the owner stepping on the brake.

Reasons for abnormal noise when braking: 1. The brake pads and brake discs do not match, this noise is a normal phenomenon, as long as the car brakes do not deviate, you can drive normally. 2. There is a foreign object between the brake disc and the brake pad, and the sand particles are sandwiched between the brake disc and the brake pad, and it will sound when stepped on between the brake disc and the brake pad, which does not affect the safety, and the brake sound will disappear if you step on it a few times.

3. The brake pad is worn to the limit, the brake pad is a consumable, when the wear reaches a certain extent, because there are some metal particles, it will produce a different abnormal sound than usual when stepping on the brake, to remind the brake pad that needs to be replaced.

Most brakes "squeak" because there is a certain friction between the brake discs when braking, so it is normal to have a slight noise.

On the issue of abnormal noise of automobiles, it is difficult for ordinary car owners to distinguish which ones are abnormal noises and which ones are reasonable abnormal noises. Only nearly 20% of the vehicles that went to the repair shop to detect abnormal noises really had problems. Models equipped with turbocharged engines distinguish between sound and natural suction; Models with engine guards may also make noises due to friction; After some car owners come into contact with different cars, it is likely that due to their lack of understanding of mechanical knowledge, they mistake reasonable abnormal noise as a vehicle failure.

Therefore, learn to distinguish the abnormal noise of the car and avoid wasting time and energy.

How to identify the sound of a car:

In practice, due to the limitations of working conditions, it is difficult to measure the sound of the car with special instruments, and the sound of the car can only be described and compared with the judgment of the sound in daily life. For example, the "rattle" sound caused by the dry friction of the bearing, and the "click" sound similar to the small hammer hitting the cement floor caused by the excessive valve clearance.

1. Correctly distinguish between normal and abnormal sounds.

The vibration of each mechanism in the work of the car will emit a variety of sounds, but the sound does not mean that the car is faulty, in order to avoid unnecessary disassembly, we must first distinguish between normal sound and abnormal noise. The normal vibration sound of each system component (such as the noise on the surface of the engine), the impact sound of the gear when shifting, the air intake sound and exhaust sound of using gas as the working source, and the gear meshing noise are all normal sounds. Abnormal noise (abnormal noise) can be divided into slight noise, general noise and malignant noise according to the impact on the performance of the car.

Slight noise, such as the flashover sound of high-voltage electric leakage, the slight loose sound of rolling bearings, etc., the general volume is small, the degree of wear of the parts is not large, and there is no significant change for a long time, and this kind of fault can still maintain the normal operation of the car without repair.

3. When diagnosing abnormal noise, attention should be paid to creating good auscultation conditions and trying to eliminate the interference of other noises, so as not to affect the accuracy of judgment.

It is best to consciously amplify or reduce the sound, that is, use a screw or other metal rod as a stestological instrument to contact the sound part to amplify the sound, or use a single cylinder fire cut-off to reduce the sound to meet the diagnostic needs. The auscultation site should be kept quiet to minimize human interference.

There are many reasons for abnormal brake noise, and if you want to know the specific reason, you can only judge according to the specific sound, and it is best to judge on the spot. Some are provided here for reference.

1. Brake pads are too badly worn: this is generally caused by the brake pads reaching the cordon or the brake pads are not worn, and the sound is mostly metal friction sound and relatively sharp, if it is accompanied by the attenuation of the brake effect, it can basically be determined that this is the reason.

2. Abnormal noise caused by brake pad material: Generally, when the brake pad material is harder, it is easier to cause this sound, relatively, the soft brake pad material is less likely to have this type of abnormal noise, but the wear of the soft material is relatively fast, and the corresponding replacement cycle is shorter than the hard one.

3. The brake system is not installed in a standardized way and causes abnormal noise, which is more complicated, if this is the reason, it is better to find someone to see it.

All in all, the braking system belongs to the safety system, that is, the life-saving system, once there is an abnormality, it is the best policy to find a professional to diagnose it as soon as possible.

The key cause of rattling when braking is excessive damage to the brake pads of the car. 1. In addition, the reasons also include serious tire wear and impurities on the brake pads; 2. When driving, if the brake rattles occurs, stop and check in time to prevent potential safety hazards.

Usually the replacement time of brake pads is more than 60,000 to 80,000 kilometers, while the replacement time of brake discs is more than 100,000 to 120,000 kilometers. If the brake pads are installed upside down or the model is different, abnormal noise will also occur. You can reinstall the brake pads.

When installing brake pads, you should go to a professional auto repair shop to install them, especially for car owners who have replaced brake pads at roadside stalls, you should pay special attention to this. Brake discs and brake pads are both highly consumable products, and every time you brake, friction occurs between the two parts. If it goes on for a long time, of course it will wear out.

When the damage is excessive, of course, there will be abnormal noise, so it should be inspected and replaced regularly. There is an alarm device on the edge of the brake pad, which is the baffle of the brake pad. At this time, the baffle will rub against the brake disc, making a screeching metal grinding sound, which serves as a warning and reminds the driver to replace the brake pads.

In the process of daily driving, sometimes we will encounter the brakes have a piercing whistling sound, at this time I am very worried about whether there is any problem with the vehicle, will it seriously affect the safe driving of the vehicle, I can say very responsibly, the brake noise must be paid attention to, we have encountered a lot of brake noise is not solved, and finally led to the brake pads and brake discs are all scrapped, but there is no major accident, but we must not hold a fluke mentality, after all, there is only one life, Next, let's analyze the possible situation of abnormal brake noise.

1. The cold car has just started, and there is a screeching sound on the brakes when starting. This situation mostly occurs in the morning, especially in the morning of winter, there is water vapor on the brake disc, and the sound is obvious when you just start driving, and there is no sound after the water vapor evaporates after driving for a period of time, so you don't have to worry about braking problems at all.

2. There is a "clang" sound when braking. This may be a small pebble jumped into the hollow part of the brake disc in the middle, and when the vehicle is driving, it will make a regular impact sound, just remove the tire and take out the small pebbles or foreign objects.

3. When you step on the brakes, there is a sound of iron grinding iron. This is mainly the position of the brake pad wear to the safety line, which is easy to ignore the problem of most drivers, at first it is a very small sound, slowly become larger, the brake pad will wear out, and finally it is completely the iron and brake disc on the brake pad to provide braking effect, this time the brake pad and brake disc need to be replaced.

4. There is a "cluck" sound when you step on the brakes. At this time, most of the situation is mainly due to the car owner pressing the brakes sharply when driving at high speed, and the ABS function of the vehicle intervenes to avoid accidents caused by the car owner stepping on the brakes.

5. When the vehicle releases the handbrake and starts, there will be a "jumping" sound. This is mainly due to the fact that the brake discs are made of cast iron. The brake pads also contain iron, and the brake disc will stick to the brake pad after rusting, so you just need to release it with the accelerator at this time, so you don't have to worry about the brake problem.

6. There is also a sound when the newly replaced brake pads are lightly pressed on the brakes. There are two main reasons for this. One is that the brake disc is seriously worn, resulting in the brake pad and the brake disc can not be completely contacted, resulting in the abnormal noise caused by eccentric wear; The second is that the brake pads selected are not silent, and only ceramic brake pads need to be selected at this time.

Summary: The problem of abnormal brake noise is very big, and it must not be ignored, just like tires, which are the first line of defense to ensure the safety of drivers' lives, and cannot be careless.

Do you have anything else to add to the problem of abnormal brake noise? You are welcome to leave a comment below, leaving us novice drivers with some valuable experience, after all, the experience of old drivers is summed up from daily driving.

Many car owners will encounter the same problem during the use of the car, that is, there is an abnormal squeak sound during the brake stepping, so what is the reason for the sizzling of the brake?

1. The brake disc is rusty, and the vehicle is exposed to wind and rain for a long time, which is likely to cause the brake disc to rust and cause the brake sizzling sound. In this case, it is usually only necessary to apply the brakes a few times to wear off the rust layer on the brake disc.

2. The wear of the brake disc is serious, and inferior sandpaper is used, or there are very hard foreign objects entering between the brake disc and the brake pad, which will cause the brake disc to wear. If the brake disc is badly worn, there will be a sizzling sound during braking application.

3. The brake pads are seriously worn, and when the vehicle is used for a period of time, the brake pads will slowly become thinner after rubbing for a long time. When the brake pads become thinner, it will not only cause the braking effect to decrease, but also cause a sizzling sound during braking when the material hardens.

4. The quality of the brake pads is not good, and the use of inferior brake pads and the material is very hard, it will lead to a sizzling sound during the braking, and it will also lead to damage to the brake disc.