The cause of abnormal noises when the car is turning

1. Airbag hairspring failure:If you find that the sound is coming out of the steering wheel, most of this problem is caused by the interference of the airbag hairspring in the steering wheel, remove the steering wheel airbag hairspring and apply some butter to see if it still sounds, if it still rings, replace the airbag hairspring, because the airbag hairspring is damaged.

2. Lack of oil in the plane bearing of the shock absorber:When playing the steering wheel, if you find that the abnormal sound is from outside the car, it may be the sound of the plane bearing of the shock absorber is short of oil, just open the front cover to listen to whether the sound is from the position of the top seat of the shock absorber, so that you can know whether it is the sound of the plane bearing of the shock absorber, if the plane bearing of the shock absorber is short of oil, apply some butter, if it is still loud after coating, it can only be replaced.

3. The glue of the balance bar is looseIf the sound is not emitted from the plane bearing of the shock absorber, it is necessary to check whether the balance bar glue is loose or damaged, the balance bar glue is loose and damaged, not only will it sound when playing the direction, but also make a sound when crossing the uneven road, the loosening of the balance bar glue can be solved by adding a gasket, if it is damaged, it can only be replaced.

Car steering precautions.

When turning, the first thing to pay attention to is the control of the vehicle, do not brake during the turning, it is easy to cause smoothing or even rollover, you should let the speed drop to an appropriate level before entering the corner.

Secondly, try not to enter corners in neutral, especially in U-shaped corners. Because in neutral mode, the engine can not contain the operation of the wheels, the car is equivalent to driving under inertia, and all braking and steering operations are greatly reduced at this time, resulting in potential safety hazards.

Slow down within 50-100 meters before turning, use turn signals to indicate the direction of travel, do one slow, two looks, three passes, pay close attention to the inside of the car turn, beware of pedestrians, bicycles, and motorcycles that are parallel to the side of the road and do not know the direction of the car.

The above content refers to People's Daily Online-Three tricks to teach you to get the inexplicable abnormal noise of the car It is very important to identify the cause.

Automobile squeak includes engine squeak, clutch squeeze, transmission squeak, final drive squeak, suspension system squeak, brake squeak, steering squeak and body squeak.

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 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.

Second, the identification method of car noise:

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.

If the turn signal is turned on at the same time as the steering, then the sound may be the sound of the rebound clip of the turn signal automatic return mechanism, which needs to be confirmed by the car owner, if so, then this is a normal situation. Sometimes you will hear more than once, at that time, because of the amplitude of your rotation of the steering wheel, the directional column has three automatic return positions in one circle, and if you turn the steering wheel once, then it will sound three times.

2. Friction between plastic parts.

The steering wheel is usually made of plastic parts, and if the temperature gets colder, the plastic will harden, and there is a natural possibility of friction sound.

3. Abnormal noise coming from the steering wheel.

If the abnormal sound comes from the steering wheel, then the problem is likely to be caused by the airbag hairspring in the steering wheel, remove the steering wheel airbag hairspring and apply some butter to see if it still sounds, if it still rings, replace the airbag hairspring, because the airbag hairspring is damaged. Be careful to remove the steering wheel gently, or unplug the airbag fuse to avoid the airbag from deploying.

4. The ball joint of the steering tie rod is aging.

If the steering tie rod ball joint is aging, then it will cause the steering wheel to shake and make a sound, which is usually replaced by the steering tie rod ball joint and the four wheel alignment after replacement.

5. Steering machine failure.

If the abnormal noise during steering is very large, then it may be caused by too large gear clearance between the steering machine and the steering machine, and the steering machine needs to be replaced.

6. The plane bearing of the shock absorber makes an abnormal sound.

Just open the front cover to listen to whether the sound comes from the position of the top seat of the shock absorber, so that you can know whether it is the sound of the plane bearing of the shock absorber, the plane bearing of the shock absorber sounds, you can apply some butter on the plane bearing, if it still rings after coating, it can only be replaced.

7. The abnormal sound emitted by the balance bar.

If it is not the sound of the shock absorber, then check whether the balance bar glue is loose or damaged, the balance bar glue is loose and damaged, not only will it sound when playing in the direction, but also make a sound when crossing uneven roads, and the loose balance bar glue can be solved by adding gaskets, and if it is damaged, it can only be replaced.

1. The sound of rebounding the clip after the turn signal.

If the steering wheel will have this sound after hitting the steering switch, it is the sound of the rebound clip of the turn signal automatic return mechanism, and this sound is normal. If you hit the steering wheel, there will be a pimple, and the steering wheel will turn around and it will appear three pimple sounds, because the steering column has three automatic return card positions in a circle, so this sound will appear. As soon as you turn off the turn signal, the sound will disappear.

2. The sound of the steering post dust jacket no matter if you are in situ or driving, as long as you hit the steering wheel, you will hear the sound coming from under the steering wheel, you should check the steering column dust jacket, once the steering column dust jacket lacks lubrication, it will produce a dry friction sound, and you only need to apply some butter in the dust jacket, the sound will disappear.

Whether you are in place or driving as long as you hit the steering wheel, you will hear the sound coming from under the steering wheel, you should check the steering post dust jacket, once the steering post dust jacket lacks lubrication, it will produce a dry friction sound, you just need to apply some butter in the dust jacket This sound will disappear.

3. The sound emitted by the airbag hairspring interference is sent out from the steering wheel when playing the direction, and most of this problem is caused by the interference of the airbag hairspring in the steering wheel.

4. The sound of the plane bearing of the shock absorber hit the steering wheel and heard the sound is made outside the car, this may be the sound of the plane bearing of the shock absorber due to the lack of oil, you just need to open the front cover to listen to whether the sound is from the position of the top seat of the shock absorber, so that you can know whether it is the sound of the plane bearing of the shock absorber, the plane bearing of the shock absorber sounds, you can apply some butter on the plane bearing, if it still rings after painting, it can only be replaced.

The basic plane bearing is damaged due to the abnormal sound of hitting the direction in situ! Volkswagen Group's car series is a common problem! Pay for all-steel bearings at your own expense! Even if the original one is replaced with a new one, it will still ring when the time comes!

Analysis of the causes of abnormal noise when the car is steering, and suggested solutions

1. The friction steering wheel between plastic parts is composed of various plastic parts, if the gap is too small when turning, there will always be abnormal noise, especially for new cars, and it will be good to run in for a while. If there is still an abnormal sound after the run-in, you can try to reinstall the steering wheel.

2. The friction between the steering column and the foot pad Sometimes the foot pad installed after the rear is too large, and it is in direct contact with the steering column, so the steering column will produce friction when it rotates.

3. Friends who have removed the steering wheel should pay more attention to the failure of the airbag hairspring in the steering wheel, which may be that the airbag hairspring is broken or the airbag hairspring plug is not plugged in properly, and the airbag hairspring or fixed plug can be replaced.

4. The steering tie rod ball joint is aging, and there is a space to replace the steering tie rod ball joint, but remember to do four-wheel alignment after replacement.

5. If the dust jacket of the steering machine leaks oil, replace the dust jacket or re-butter it. Buttering is only a stopgap measure, though.

6. If the steering machine is faulty, there is a "cluck" sound when hitting the direction, it may be that the gear gap between the steering machine and the gear is too large, and the steering machine can be replaced.

7. When the plane bearing is faulty and the top rubber is in the direction, there is a "special special" sound, which is likely to be the failure of the shock absorber top rubber or plane bearing, and it can be replaced.

8. Improper tightness or aging of the booster beltFor mechanical hydraulic assistance, if the tightness of the belt is improper or aging, there will be abnormal noise, and the belt can be adjusted or replaced.

9. If the steering oil is too dirty, it will increase the pressure of the power assist system, and the power pump will have a "buzzing" sound, and the power assist oil can be replaced.

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The main reasons for abnormal noise in the steering system and steering wheel of the vehicle are as follows:

1. The steering fluid model is incorrect or missing; 2. There is air in the steering hydraulic system (pipeline); 3. The internal gear of the steering machine is loose or worn; 4. The steering oil pump is worn or damaged; 5. The ball joint of the straight tie rod is worn or damaged; 6. The universal joint of the steering string is loose; 7. The ball joint of the tie rod is worn or damaged; 8. Insufficient tire pressure or tire wear.

Solution: Damaged parts should be repaired or replaced in time, and contact the nearest service station for processing.

Principles of automotive steering

It is mainly to use the steering wheel to drive the steering machine, and then make the rack and pinion steering device function, so that the front tie rod swings left and right to make the front wheel produce an angle and thus the steering effect occurs. A car steering system is a system used to maintain or change the direction in which a car is traveling or reversing.

Automotive steering systems are divided into mechanical steering systems and power steering systems. The mechanical steering system uses the driver's physical strength as the steering energy, and all the force transmission components are mechanical. The mechanical steering system consists of a steering control mechanism, a steering gear, and a steering transmission mechanism.

Power steering is a steering system that uses both the driver's physical strength and engine power as steering energy. Under normal circumstances, the energy required for steering is only partially provided by the driver, while most of it is supplied by the engine through power steering.

1. This situation generally appears in the model of mechanical hydraulic power steering, which is a very common way of steering power in the past, referred to as HPS in English, with mature and reliable technology and low cost. This type of steering power assist converts a part of the engine's power output into hydraulic pump pressure, which exerts auxiliary force on the steering system to steer the tires. When the steering wheel is not turned, the pressure in the chambers on both sides of the piston is the same and it is in equilibrium.

When the steering wheel rotates, the mechanical control valve connected to the steering column will be opened or closed accordingly, one side of the oil will no longer pass through the hydraulic cylinder and directly flow back to the oil storage tank, the other side of the oil continues to be injected into the hydraulic cylinder, the pressure difference between the two sides of the piston will be pushed under the action of the hydraulic force, and then produce auxiliary force, at this time we will feel that the steering wheel is not so laborious.

2. The steering pump drives the belt to slip. The steering pump is driven by a belt, and if the friction between the belt and the pulley is too small, the belt will slip on the pulley, and there will be a squeaky sound at this time. It may be caused by loose belt adjustment, excessive wear of the grooves of the pulley, or the new belt does not fit well with the old pulley.

A simple way to tell is to pour a little water on the belt when there is a noise, if the noise goes away, it means that the belt is slipping. At this time, first adjust the tension of the belt, if there is still a sound after adjustment, you can use it for a period of time to make the belt and the pulley fully match and then see if it is still ringing, if it is still ringing, you have to replace the pulley.

What to do if the steering wheel of the car is abnormal.

1. The sound of rebounding the clip after the turn signal.

2. The sound of the dust jacket of the direction column.

Whether you are in place or driving as long as you hit the steering wheel, you will hear the sound coming from under the steering wheel, you should check the steering post dust jacket, once the steering post dust jacket lacks lubrication, it will produce a dry friction sound, you just need to apply some butter in the dust jacket This sound will disappear.