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1. The engine has abnormal noise.
Symptom description: There is a lot of abnormal noise in the engine compartment, and most people also judge it to be the abnormal noise of the engine compartment by the sound**, which is usually a metal screeching sound or a howling sound.
Solution: The abnormal engine noise indicates that the technical status of a certain mechanism of the engine has changed. It is mainly caused by excessive wear and tear of some parts or improper assembly and adjustment.
Some abnormal noises can still predict that the engine will be damaged accidentally, so when the engine has abnormal noise, it should be repaired in time to prevent the fault from expanding.
It should be reminded that if it is an abnormal noise in the engine, most of the owners will not be able to solve it by themselves, and it is best to send it to the factory for maintenance.
2. There is abnormal noise in the gearbox.
Symptom description: If there is a "rustle" sound inside the gearbox while the car is driving, and there is no more after pressing the clutch or accelerator, there will be a whistle-like sound when changing gears.
Solution: There are many transmission parts, and the reasons for the sound are more complex, so we should pay attention to whether it is related to a specific speed, such as some planetary teeth that sound at about 50km h.
Whether it is related to certain gears, which is very important for judging the failure of the transmission, if a certain gear sounds, it must be related to the components that affect the transmission of the gear; If all gears sound, it is often a common meshing shaft failure or a lack of oil in the transmission. Whether it is related to specific actions, such as increasing and decreasing gears, starting, rapid acceleration, sharp deceleration, turning, etc., are effective means to judge abnormal noise, among them, changing speed and direction are particularly important for judging the rear axle fault.
If the abnormal noise of the transmission is obvious, it is recommended to send it to a professional repair shop to check the faulty parts, and then replace them.
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The two corners near the column and the center console resonate when driving on rough roads - pry the two horn grilles up with a knife, stick a layer of double-sided tape on the joints, and then install them to try 2The screeching of the trunk when crossing speed bumps or small potholes in the road (probably not a jack, because it is tightened. Could it be the tailgate?
How to solve it? - The jack is screwed again.
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1.The balance bar opening glue is aging and loose. How to check: Lift the car, grasp the balance bar with your hands, and shake it vigorously. Under normal circumstances, it cannot be shaken. If it is loose, the opening glue of the balance bar needs to be replaced. (Balance bars are also called anti-roll bars).
2.The ball head of the balance bar boom is aging. Method: Remove the tire and observe whether the derrick ball joint rubber is aging and cracking.
3.The ball joint of the lower swing arm and the rubber cushioning material at the junction with the chassis are aging and cracking. Inspection method: Pry with a crowbar to check whether the rubber material is broken or aged.
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If the vehicle squeaks as soon as the brakes are stepped on, it means that the brake pads are worn to the limit and have begun to grind to the brake disc, so you should go to the repair shop for maintenance as soon as possible, find out the cause of the squeak as soon as possible, and don't force the car anymore.
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5. Inspect the shock absorber and compress the shock absorber by hand to listen to whether there is any abnormal noise. 1.Check the braking system.
If the vehicle squeaks as soon as the brakes are pressed, it means that the brake pads are worn to the limit ,..2.Check the tightness of the belt Sometimes the belt of the car is loose and there will be a squeak.
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This should be the reason for the aging of the rubber strip of the car.
If there is an abnormal noise in your car, then it should be the aging of these sealants caused by the usual sun and rain, so it will cause this sound.
You can take your car to a car repair shop and have it checked.
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Brother squeaks, you need to look for what position you want to see, what position to see is called vehicle noise, this is called vehicle noise.
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If the car squeaks while driving slowly, it is most likely from the suspension. Automotive suspension includes connecting rods, springs, shock absorbers, and stabilizer bars.
In this case, 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.
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.
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Summary. Hello, the reason why the car squeaks:
Rear shock absorber creak: generally caused by abnormalities in the shock absorber and shock spring;
What is the cause of the creaking noise.
Hello, the reason for the squeaking of the car: the creak of the rear shock absorber: it is generally caused by the abnormality of the shock absorber and the shock absorber spring;
Shock absorber damage: When the shock absorber of the vehicle is damaged, there is a problem with the coordination between the various parts of the shock absorber, that is, the residual will make it creak when working on the bumpy road.
Shock spring damage.
Check out these three aspects!
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Do you mean the car, the reason why the car squeaks when driving
1. When the car is driving slowly, there is a squeaky sound, which is likely to come from the suspension of the car. After all, a car's suspension consists of springs, shock absorbers, connecting rods, and balance bars. When there is a problem with these parts, it makes the car squeak.
2. When the car is driving, when it squeaks when the brakes are lightly pressed, it is likely to be due to the condition of the braking system. For example, uneven wear of brake discs and brake pads, too thin brake pads or faulty calipers can cause the braking system to creak and squeak. 3. If the belt of the engine is loose, there will be a squeaky sound.
At this time, we can twist the transmission belt to less than 90 degrees by ourselves and adjust the tightness. Please note that when performing this step, you must wait until the engine has cooled down. Otherwise, be careful that burns will appear on your hands.
The solution to the squeak and squeak when the car is moving: 1. Tighten the parts on the suspension. 2. Remove the brake pads and use an angle grinder to polish the edges, so that there will be no abnormal noise.
3. Adjust the tightness of the belt. 4. Check the position of the brake pads, and adjust them if they deviate. 5. If the above methods still cannot be solved, choose to go to the maintenance factory of Zhuzen Huiye for maintenance.
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Hello, there are many reasons for abnormal noise, generally caused by the engine, suspension, brakes, tires, etc., it is recommended to go to the repair shop to check it. Hope it helps, hope.
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In a normal straight line, the noise is not audible because there is almost no relative movement of the differential half-shaft gears and planetary gears. During the driving of the car, the reason for the abnormal sound of the rear axle gear is mostly caused by poor lubrication, which leads to the reducer gear grinding scars, if the abnormal sound can be heard at various sliding speeds, it means that it is caused by the loosening of the nut of the reducer driving gear. At low speeds, there is a knocking sound on the rear axle, and when accelerating or decelerating, it makes a particularly dull abnormal sound.
The cause of the above fault can be found from one or more of the following places: 1. The gap between the half-shaft gear journal of the differential and the differential housing is improper; 2. The differential cross shaft journal and the differential shell are not properly matched; 3. The backlash between the half-shaft spline gear and the half-shaft wheel keyway of the differential is improper; 4. The meshing backlash between the half-shaft gear of the differential and the planetary gear is improper; 5. Improper meshing backlash of the active and passive gears of the differential cone; 6. Thrust washer wear. When the vehicle is moving, the abnormal noise on the rear axle is due to improper clearance of the gear mesh, improper adjustment of the differential bearing preload, or both.
When eliminating abnormal noise, it is necessary to disassemble and check the differential gear and the reducer gear.
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There are many reasons for the abnormal noise of the car generator, the motor bearing, the belt, and the brushes will all sound, so you have to know which noise to solve.
There is a high probability that the bearing will ring, and the reason is that the most common type of failure is the bearing ring.
Generally, the bearing sounds, and the bearing is damaged, and the rotor and stator have friction; Or it is caused by loose fan blades of the generator. If yes.
If the bearing rings are loud or damaged, you can replace a bearing, and replacing the bearing is not a big project of about tens of yuan to 100 yuan. Next, take care of the generator's rotor.
Slip rings are replaced with carbon brushes. If the fan blades are loose, it's even simpler, just tighten them. If the car is not out of warranty, it is even better, directly.
To get a new generator, of course, you must go to the 4S store and ask for a new generator, and it must be the original factory.
goods, strictly refuse the analogue, the problem of abnormal noise can be directly asked to be replaced, mainly to see if the thing that is exchanged for you is the original, this is a quality problem! And be sure to note.
The meaning is that you can't go to other repair shops for disassembly before this, you can only go to the 4S shop to check, otherwise the 4S shop will say that you have dismantled and decorated elsewhere, and will not be repaired.
There is also a possibility that the belt of the car generator rings, in this case, it is recommended to check first, the belt may be too tight or too loose, can't.
If you solve it, you can only replace it, don't wait for the fault to be big, otherwise it will affect your normal driving.
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I often hear riders report that there is an inexplicable abnormal noise in the car.
To eliminate abnormal noise, the key is to find the location of abnormal noise, so that it can be eliminated. Therefore, it is best to ask someone who knows a little about cars to sit in your car and find the location of the abnormal noise, so that it can either go to 4s or solve it yourself.
For some plastic parts, due to thermal expansion and cold contraction or aging deformation, resulting in displacement or loosening of the connection or buckle parts, or assembly quality problems, it is generally solved by fastening, gasketing, lubrication (soap) and other methods.
It is best to bring the 4S and the factory's road rescue** to the car for emergency use; For those who don't know the car, you don't have to bring engine oil or anything, and you don't know how to use it if you bring it, and you will get dirty car decorations.
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