Abnormal noise, which rider has completely solved it, please consult

The specific part of the abnormal noise can help you analyze, so that it is relatively more accurate.

Abnormal noise, you need to confirm the abnormal noise part, in the maintenance, you said too general.

Sometimes the problem of the vehicle is not easy to find according to the text, it is best to find a nearby professional and reliable maintenance shop to call the master to check it is more convenient, otherwise the after-sales service is OK, only the specific inspection can be effectively solved.

The abnormal noise of the car site can be easily solved.

1;The half-shaft ball cage is too damaged, the half-shaft gear gap of the 2 tail teeth is too large, and the 3 parallel Xuan ball head is loose.

What are the reasonable squeaks. 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.

<> "The problem of abnormal noise in the body is usually due to the lack of stiffness of the body, the deformation of the vehicle during driving, the friction or shaking of the door and the frame, or the friction between the steel plates due to dewelding in some places.

This is mainly caused by the quality of the car, which is a problem of quality and production process, and there is basically no solution. However, some body parts are not fixed and may also cause abnormal noise, which can be solved by tightening the screws or changing a tape, and may be able to reduce or eliminate abnormal noise by sticking adhesive strips on doors and windows or padding rubber on friction parts, but treating the symptoms but not the root cause.

It is normal for the engine to vibrate and make some sounds, but some special sounds and may indicate a potential malfunction.

For example: 1 is more harsh belt whistling, which is generally caused by belt slipping; 2. The sharp sound of dry friction of metal parts when the engine is running, which is generally the cause of damage to the bearings of generators, water pumps and power steering pumps, and may also be caused by loose fasteners; 3. If it is the sound of engine leakage, it may be the result of blockage of the exhaust system, leakage or rupture of the vacuum pipe;

This is probably the most common squeak. As soon as you step on the brakes, you will "hiss", first, there may be a hard object in the brake; Second, the brake pads may be almost worn out and need to be replaced; If neither of the above is the case, then it may be because the brake pads are harder, and a softer brake pad should solve the problem.

Of course, the brake pads generally have some hard metal chips at the bottom, which are deliberately put in during production, and when these chips are grinded, there will be a hissing sound of metal friction, which is to tell the owner that the brake pads are almost gone, and the brake pads should be replaced at this time.

Needless to say, the importance of the direction plate, there is no direction to shout, and the rest is an accident. The main reasons for the abnormal sound of the steering wheel are:

1. The ball head of the steering tie rod is aging and has an open space. Replace the ball joint of the steering tie rod, but after the replacement, you need to do the dust jacket of the four-wheel positioning steering machine, replace the dust jacket or re-butter it.

2. Steering machine failure. If there is an abnormal sound of "clucking" in the direction of hitting, it may be caused by the excessive gear clearance of the steering machine, and the steering machine needs to be replaced.

There is a creaking sound of the front windshield, which is an abnormal sound that seriously affects the mood of the people in the car.

In fact, when the front windshield sounds, it is usually not the manufacturer's assembly process problem, but the front windshield may have entered foreign objects or dust, which needs to be cleaned up. The low-speed bumpy road section is sounding.

Problem A: From your description, the problem may be with the steering machine or steering tie rod. These two components can produce unusual noises when the vehicle passes over uneven roads.

You can check whether the relevant parts are loose or damaged, and whether the relevant parts need to be replaced. It is recommended that you go to a regular car repair shop or workshop for overhaul and repair. Because some operations require specialized tools, non-professional repairs may present other risks and dangers.

Problem B: Based on your description, this situation may be caused by a problem with the braking system. The hum can be caused by issues such as uneven brake disc surfaces, brake failure, excessive carbon deposits, etc.

Whereas the squeaking sound of metal can be caused by poor friction between the brake pads and the brake disc. It is recommended that you check the brake system to see if the brakes are badly worn, whether the brake disc is smooth, and whether the brake pads are high and need to be replaced. If the problem with the braking system is resolved, the hum and metallic squeak should also be reduced or gone.

In order to ensure driving safety, please go to a regular car repair shop or repair shop for inspection and repair as soon as possible.

For Problem A, if the shock absorber Zen header, top glue, and lower swing arm assembly are replaced, but the front of the car still makes an abnormal noise, then the problem may be with other components. Possible causes include:

There is a problem with the tire, such as tire damage, insufficient air pressure, etc.

There was a problem with other components in the suspension system, such as springs, suspension arms, etc.

There is a problem with other components in the steering system, such as steering knuckles, steering machines, etc.

There was a problem with the wheel hub and braking system, such as deformation of the brake disc.

For question B, the buzzing may be due to too much clearance between the wheel hub and the brake disc, which causes the hub to buzz when the wheel rotates. Metal squeaks can be due to abnormal friction of brake components, such as brake jamming, etc.

If it is normal to disassemble the bearings, then possible causes include:

There are problems with the planetary gears, such as damage to He Chunshu, deformation, etc. Trouser curl.

There is a problem with the axle of the wheel, such as bending, twisting, etc.

There was a problem with other parts of the brake, such as brake pad wear, brake fluid leakage, etc.

In order to solve these problems, it is recommended that you take your vehicle to a professional car repair center for inspection and repair as soon as possible.

For problem A, if replacing the shock absorber, top glue, and lower swing arm assembly does not solve the problem, it may be necessary to further check the vehicle's suspension system, steering system, and brake system, etc. Specific possible causes include:

There is a problem with the wheel bearings.

Tires are unbalanced or have tire failures.

There is a loosening of the axle of the front wheel hub.

There is a problem with the steering mechanism, such as the steering gear or transmission rod.

There is a problem with the brake mechanism, such as brake pads or brake discs.

For question B, if the bearing has been inspected and there is no state search for the problem, other possible causes can be considered, such as the transportation of bridges.

Tire problems, such as uneven tread wear or incorrect air pressure.

Braking system problems, such as foreign objects or imbalance in the brake discs or brake drums.

Suspension problems, such as loose front suspension or spring problems.

Problems with the half axis, such as a damaged half axis calendar or loose joints.

It is advisable to go to a professional car repair shop for inspection and repair.