Reasons for loose and abnormal noises in car backrests
Many customers usually find that the car backrests are loose and make abnormal noises when driving, but they don't know what the reason is? The following is the answer from Taizhou Shuncheng Industry and Trade Co., Ltd.
1. The engine has abnormal noises
Symptom description: There is a high possibility of abnormal noises in the engine compartment. Most people also judge that it is an abnormal noise in the engine compartment based on the source of the sound, which is usually a metallic harsh sound or a wind whistling abnormal noise.
Solution: The abnormal noise of the engine indicates that the technical status of a certain mechanism of the engine has changed. It is mainly caused by excessive wear of some parts or improper assembly and adjustment. Some abnormal noises can also predict that the engine may be accidentally damaged. Therefore, when the engine has abnormal noises, 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, the owner is mostly unable to solve it by himself, and it is recommended to send it to the factory for inspection.
2. The gearbox makes an abnormal sound
Symptom description: If there is a "rustling" sound inside the gearbox while the car is driving, and it disappears after pressing the clutch or accelerator, there will be a whistling sound when shifting gears.
Solution: There are many parts in the transmission, and the causes of the noise are also complicated. When analyzing and judging, you should pay attention to: whether it is related to a specific speed, such as some planetary gears that make a more obvious sound at around 50Km/h. Whether it is related to certain gears is very important for judging transmission failure. If a certain gear makes a sound, it must be related to the components that affect the transmission of that gear; if all gears make a sound, it is often a constant mesh gear shaft failure or a lack of oil in the transmission. Whether it is related to specific actions, such as adding or subtracting gears, starting, rapid acceleration, rapid deceleration, turning, etc. are all effective means to judge abnormal noises. Among them, changing speed and direction is particularly important for judging rear axle failures.
If the transmission makes obvious abnormal noises, it is recommended to send it to a professional repair shop to check the faulty parts and then replace them.
3. The car door makes strange noises
Symptom description: When driving, there are always some strange noises in some parts of the car body. The sound is not loud and does not affect normal driving, but it always makes people worry that there is something wrong.
Solution:
The abnormal noise of the car door is mainly caused by lack of lubrication, but it is necessary to determine whether it is the position of the door hinge or the glass lifter, door lock mechanism, handle mechanism, etc. inside the door. If it is a door hinge or limiter, you can use door hinge and slide grease, and the lubrication of the glass lifter, door lock mechanism, handle mechanism, etc. inside the door can be lubricated with door accessory grease. When choosing brands, try to choose the brands commonly used in 4S stores. It is not advisable to use engine oil or ordinary butter, which will freeze in winter and the harmful smell will affect your health.