What is the reason for the abnormal noise of the car on the bumpy road?

The reasons for the abnormal noise of the car in the bumpy road section are as follows: 1. The connecting screw of the site parts is loose. 2. If the car squeaks when driving slowly, then the suspension of the car includes connecting rods, springs, shock absorbers and balance bars, and one of the components is abnormal.

3. The shock absorber is abnormal and needs to be replaced. 4. Aging of components, this situation may occur in places with rubber parts. 5. If the engine belt is loose, you can try to clamp the transmission belt with your fingers, and then twist it, pay attention to the operation should be in the case of the engine cooling, and pull the degree - other places here to pay attention to a place to adjust the tightness.

The squeak of the car over a bumpy road is the reason for the stabilizer bar. Check whether the stabilizer bar rubber sleeve is aging, and there will be this sound when it is aging and hardening.

1. The connecting screws of the site parts are loose and need to be tightened.

2. The shock absorber is abnormal and needs to be replaced.

3. The most serious thing is that there is an abnormal sound in the body, which requires a change of car.

Possible causes of abnormal noise when the car is bumpy:

Swing arm: the role of the swing arm is to support the tire, so how can this cause abnormal noise, the swing arm has two positions with rubber pads, and the other position is to install a small ball head, set on the horns, due to long-term driving and rotating the steering machine, will lead to the wear of the small ball head and the rubber pad, resulting in too large a gap, abnormal noise when driving on uneven roads, as long as we replace the new swing arm, the abnormal sound can be directly solved.

Balance rod ball joint: commonly known as a small tie rod, the function of this accessory is that my car can maintain the stability of the car during driving, such as when the horizontal height of the left and right wheels is different, in order to prevent the twisting of the shaft.

The balance bar will produce anti-roll resistance to inhibit the rolling of the body, so why does this little thing also cause noise, the reason is the same as the ball head of the swing arm, due to long-term driving and turning, it will lead to excessive wear and tear inside the ball, resulting in too large a gap, and the solution to the abnormal noise, replacing new accessories can also directly solve the problem of abnormal noise.

1. Check whether the chassis rubber pad is worn.

2. Whether there is a shortage of oil in the ball head.

3. The shock absorption is worn or the quality is not good.

Every car has a resonance point, and the speed of the vehicle at the resonance varies. It is generally believed that the higher the speed of the vehicle at resonance, the better the quality of the car. Resonance occurs around Poussin 100, and resonance occurs at 200.

When you turn on the air conditioner and feel the car shaking, it's not resonance, it's a lack of engine power.

The abnormal sound produced by the sunroof slide.

Some car owners rarely use the sunroof of their car, and once used, the sunroof will make a "squeak" sound. Experts said that the situation of the sunroof of the car is the situation that many car owners often "only know how to use, but do not know maintenance". In general, sunroofs should be lubricated at least once every two or three months.

Otherwise, it will make abnormal noise, poor movement, and even burn out the motor.

Experts said that car owners can use cotton cloth, gauze to wipe the track of the slide rail, after wiping clean, apply a small amount of grease to the slide track, generally 4S professional maintenance using tiger head hotolube or Kruber car sunroof grease. The maintenance interval is three to four months.

Do not use petroleum jelly or motor oil, as it will pollute the interior and emit harmful odors.

Abnormal noise caused by the door hinge.

After the hinge is used for a long time, it will greatly increase its friction, and then produce abnormal noise, then what we need to do is to apply grease, you can use the door hinge grease of the tiger head hotolube, which is the grease used for 4S maintenance. In this way, the friction will be greatly reduced, and there will be no abnormal door noise. The maintenance interval is three to four months.

Abnormal noise from the door limiter.

If the door limiter is not regularly maintained, it will also make the door make abnormal noise, what we need to do is to apply some of the same grease as the door hinge, so that the friction of the door limiter will be greatly reduced, and the abnormal noise of the door will be solved.

Do you have an unusual noise when your car crosses a bumpy road? It's a problem here, use this method to make the abnormal noise disappear.

1. Check whether the chassis rubber pad is worn.

2. Whether there is a shortage of oil in the ball head.

3. The shock absorption is worn or the quality is not good.

Your car is very new, there should be no such sound, unless you often walk bumpy roads, the above points, can be oiled, can be oiled, with a brush can also be painted, it should be fine, and when brushing the car, try to brush as little as possible under the car or under the hood.

It doesn't matter, it's just some rubber pad rubbing sound,

The hinge is a part that connects the door and the body, just like the hinge on the door, often opening and closing the door vigorously, which will cause serious wear and tear of the door hinge, and the door will not be closed tightly after a long time, resulting in abnormal noise.

In the problem of abnormal noise, it is difficult for ordinary car owners to distinguish which ones are fault 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 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, I am your exclusive technician, attentive, careful, attentive to answer your car questions, for you to find the corresponding problem solutions, the car over the bumpy road noise is mainly the suspension problem, knock dong is shock absorption, balance bar boom two problems, this only replace the new shock absorber and balance bar boom, the replacement of ** has a relationship with the model, the ordinary single for a shock absorber to more than 600, a single for a boom more than 200, if it is a chirp is the triangle arm rubber sleeve problem, this replacement of a separate rubber sleeve, You'd better go to the pit station to test check this problem, and it is easy to judge.

Possible Causes:

1. The connecting screws of the site parts are loose and need to be tightened.

2. The shock absorber is abnormal and needs to be replaced.

3. The most serious thing is that there is an abnormal sound in the body, which requires a change of car.

This problem may be caused by the gap between some parts of the body after a long time, which causes some parts to rub and make abnormal noises when passing over non-paved roads or in an emergency braking state.

The reason why the car has abnormal noise on bumpy roads is: the shock absorber is faulty. The shock absorber fails, the shock absorption performance is reduced, and when the car is driving, the frame, leaf springs, and axles collide with each other, resulting in abnormal noises.

Shock absorber failure requires direct replacement. There are three common causes of shock absorber failure: 1. The rubber parts of the top rubber and arm rubber sleeve of the shock absorber are aging and hardening, and the rubber parts are hardened and squeezed, resulting in abnormal noise.

2. The nirvanizer is faulty, which makes the shock absorber make abnormal noise. 3. Air leakage and oil leakage occur in the shock absorber. The shock absorber can be inspected for damage in the following ways:

1. Press hard at the bumper, and the car has two to three jumps after release, indicating that the shock absorber is not damaged. 2. When driving on a relatively flat road section and slow speed, the car vibrates strongly up and down, indicating that the shock absorber is faulty. 3. If you drive ten kilometers on a flat road section, you can judge whether there is a fault by the temperature of the shock absorber shell.

It is recommended to go to the maintenance station for test testing, focusing on checking chassis parts, such as rubber sleeves, whether the chassis bolts are loose, and whether other chassis components are damaged.

Hello, I am your exclusive technician, attentive, careful, attentive to answer your car questions, for you to find the corresponding problem solutions, the car over the bumpy road noise is mainly the suspension problem, knock dong is shock absorption, balance bar boom two problems, this only replace the new shock absorber and balance bar boom, the replacement of ** has a relationship with the model, the ordinary single for a shock absorber to more than 600, a single for a boom more than 200, if it is a chirp is the triangle arm rubber sleeve problem, this replacement of a separate rubber sleeve, You'd better go to the pit station to test check this problem, and it is easy to judge.

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 various parts, 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 suppress **, 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 leakage, it should be repaired 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 joints 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 for adopting.

The following are the specific reasons for the abnormal noise of the car over the bumpy road: 1. Shock absorber failure: It is best to check the car shock absorber to a 4S shop or repair shop to lift the vehicle through a lift to check whether the shock absorber has a gap and whether the suspension is faulty.

If the shock absorber is leaking, it may be that the oil seal gasket is faulty and the shock absorber needs to be replaced. Generally, the service life of the shock absorber is 8-100,000 kilometers, when the car is driving 80,000 kilometers, you can let the technician pay attention to the situation of the shock absorber during regular maintenance, and repair it in time if there is a fault. 2. The ball joint clearance of the steering tie rod is too large

There may also be an abnormal noise when turning. In serious cases, there will be steering wheel shake, tires eating tires, etc., you should go to a 4S shop or repair shop to replace the ball joint in time. 3. The gap between the lower armes is too large

Or the lower arm is loose. The lower arm is an important part of maintaining the elasticity of the car body and is part of the suspension of the car. The lower arm connects the axle to the frame and cushions the impact of the car on bumpy roads.

Once the lower arm fails, it should be replaced in time at a 4S shop or repair shop.