What is the reason for the noise in the chassis of the car?

If there is an abnormal sound in the chassis of the car, it may be caused by the fault of the wheel bearing of the vehicle, if it is this kind of failure, it is easy to make abnormal noise in the chassis when the vehicle is driving, and the wheel bearing needs to be checked, and the fault must be repaired or the corresponding components must be replaced in time.

2. There is an abnormal sound on the chassis of the car, if it occurs when driving on a smooth road, it may be related to the failure of the vehicle's braking system, and the braking system can be checked.

3. When the steering system of the vehicle fails, it is easy to cause the sound of abnormal noise on the chassis of the vehicle, in this case, it is necessary to check the steering system and deal with the fault in time.

4. There is abnormal noise in the chassis of the vehicle, which may also be caused by loose or damaged engine mounts, and the chassis is prone to abnormal noise when starting. If this is caused by this reason, the cause of the failure should also be checked and treated, and if the engine bracket is damaged, it should also be replaced with a new one in time. Causes of abnormal noise in the chassis of the car:

1. The abnormal noise emitted by the vehicle when starting is generally a fault of the suspension system, which may be caused by loose or damaged engine mounts. 2. The abnormal noise emitted by the vehicle when steering may be a fault of the steering system and suspension system. As the vehicle is steering, the suspension system is also involved in the movement due to the tilt of the vehicle that deforms the suspension system.

3. The abnormal noise emitted by the vehicle when the road conditions are good may be the fault of the braking system components. It can be caused by loose brake system components, worn out, brake drum loss or uneven brake disc plane. 4. It may also be that there is a problem with the bearing between the dynamic and static connection of the vehicle.

If it is a bearing problem, the driver can distinguish it with a little brake, if the vehicle does not change the brake sound when moving at a constant speed, it is a problem with the bearing. 5. Most of the abnormal noises that occur when the vehicle is driving in bad road conditions are the problems of the suspension system. It can also be caused by a loose braking system.

6. Most of the abnormal noises emitted when the vehicle accelerates, decelerates or stops are caused by the suspension system and braking system. The suspension system emits more friction sounds, to reduce these abnormal noises, the driver needs to pay attention not to drive roughly, try to avoid bumps, when encountering bad road conditions, need to slow down, avoid wading, so as to effectively reduce the abnormal noise of the vehicle chassis.

What is the reason for the noise in the chassis of the car? Reasons for the sound of the chassis of the car: 1. There is a problem with the rubber sleeve of the balance bar:

The phenomenon is that the chassis will have abnormal noise when the vehicle passes through the uneven road surface, due to the erosion of soil and dust, the rubber sleeve of the balance bar becomes harder and harder after aging, resulting in the inconsistent height of the left and right wheels of the vehicle. 2. There is a problem with the brake pads: the phenomenon is that there is an abnormal sound under the front wheel, especially when the steering wheel is obviously abnormal, and the brakes are stepped on when the sound is sounded. 3. There is a problem with the connection between the suspension and the shock absorber: if the chassis makes a creaking sound when the car is driving, it is likely to be the reason, and the judgment method is to press the top of the suspension part of the body after the vehicle is turned off, so that the body shakes up and down, and at the same time listen carefully to the abnormal sound, you can judge which part of the problem occurs; 4. There are also abnormal noise of wheel bearings, deformation of shock absorbing springs, aging or abnormal wear of shock absorbing pressure bearings, etc., which will lead to abnormal noise of automobile chassis.

The reasons for the sound of the chassis of the car: 1. There is a problem with the rubber sleeve of the balance bar: the phenomenon is that the chassis will have abnormal noise when the vehicle passes through the uneven road surface, and due to the erosion of soil and dust, the rubber sleeve of the balance bar will become harder and harder after aging, resulting in the inconsistent height of the left and right wheels of the vehicle and the abnormal sound; 2. There is a problem with the brake pads

The phenomenon is that there is an abnormal sound under the front wheel, especially when the steering wheel is obviously abnormal, and the brakes are stepped on when the sound is sounded, if it does not sound, it can be determined that there is a problem with the brake pads; 3. There is a problem with the connection between the suspension and the shock absorber: if the chassis makes a creaking sound when the car is driving, it is likely to be the reason, and the judgment method is to press the top of the suspension part of the body after the vehicle is turned off, so that the body shakes up and down, and at the same time listen carefully to the abnormal sound, you can judge which part of the problem occurs; 4. There are also abnormal noise of wheel bearings, deformation of shock absorbing springs, aging or abnormal wear of shock absorbing pressure bearings, etc., which will lead to abnormal noise of automobile chassis.

This means that the chassis may be loose and there will be a large gap between the lever and the other connected parts.

It is difficult for ordinary car owners to distinguish which are fault abnormal noises and which 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 are different; 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.

Hello! Glad for your question.

Loose chassis generally occurs in older cars, when the car is driving in bad road conditions, the steering wheel will feel unstable, the bottom of the car will also come out of the abnormal sound, usually the old driver can feel the overall a little loose, when encountering such a situation, it means that the chassis may be loose, and the reasons for this situation are divided into several, only by understanding the reasons, can we better prevent this problem from happening.

The first reason is the aging of rubber parts, we all know that the elasticity of rubber is particularly good, which can buffer the friction between parts and reduce noise at the same time. However, this kind of thing has a lifespan, and it will age after a long time, and the elasticity is not as good as before, so the buffering capacity will decrease, resulting in abnormal noise in each part, so it is necessary to check these rubber parts regularly and replace them in time.

The second possibility is the reason for the shock absorber, the main role of this part is to inhibit **, when the car is driving in the dustpan section, it will have an impact with the road surface, and the shock absorber can well ensure the smoothness of the car, if the shock absorber is damaged, there will be a scoop phenomenon, so that the chassis is loose, so usually check the shock absorber, if there is a leakage to repair in time.

The third is the clearance of the parts, that is to say, the ball head may be loose, this part is like the joint of the human body, if the ball head is loose, there will be a large gap between the lever and other connected parts, if the gap is too large, when crossing some dustpan roads, the screws between the subframe and the suspension will be loose, then the chassis will become loose, so usually check these two parts. Thank you.

Hello dear, the car chassis sounds, and the history is generally caused by the aging of chassis parts. First, if the brake pads are too thin, it will lead to abnormal noise in the chassis, and the brake pads need to be replaced in time. The second is that the aging gap of the ball head or rubber sleeve of the chassis support arm is too large, and the support arm needs to be checked and replaced if there is a problem.

The third situation is that there is a gap between the half shafts of the vehicle chassis, and the state of the half shafts needs to be checked. Hello, I wish you a happy family, if you need to continue to consult, I will always wait for your reply I wish you good luck, everything goes well, and a happy life! Kiss kiss kiss.