Vehicle noise is a very headache problem, because it not only reduces the sense of driving advanced, affects the mood of the occupants in the car, more importantly, some abnormal noise is actually a "fault alarm", so it is particularly important to find the root cause of the abnormal sound and eliminate the abnormal sound.
The ten abnormal noises to be mentioned below cover almost all the parts of the car, and if your car has these abnormal noises, you must deal with them in time.
The body is unusually loud
The problem of abnormal sound in the body is usually because the body stiffness is not enough, resulting in deformation of the vehicle in driving, friction or shaking of the door and the frame, or friction between the steel plates 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 well may also cause abnormal noise, this tightening screw or changing tape can be solved, for the door and window on the rubber strip or in the friction part of the rubber and other methods may be able to reduce or eliminate the abnormal sound, but the symptoms are not cured.
The engine compartment is unusually loud
Engine vibrations that make some noise are normal, but some special sounds and may indicate a potential failure. Like what:
1. The more harsh belt whistle, which is generally caused by the slip of the belt;
2. The sharp sound of dry friction of metal parts when the engine is running, which is generally the cause of the damage to the bearings of the generator, water pump and steering power pump, and may also be caused by loose fasteners;
3. If it is the sound of engine running and leaking, it may be the result of blockage of the exhaust system, leakage or rupture of the vacuum tube;
4. The sound of the heavy hammer hitting the metal is heavy, which is the engine knocking, generally because the ignition angle is too large, the combustion chamber has too much carbon deposition, the spark plug calorific value is low and the use of inferior gasoline;
The tires are unusually loud
If you hear the sound of "da-da" when driving, it is likely to be mixed with stones or tires are nailed; if there is a muffled "purring" sound, accompanied by the shaking of the tires and the body, the tires should be uneven tread and need to be replaced; the tire pressure is too high, which may also cause the tire noise to be too large.
The gearbox has a different sound
The way to judge the abnormal sound of the transmission is that if the car has noise in the case of idling, the noise disappears after stepping on the clutch, indicating that the source of the noise is caused by the failure of the gearbox; for the automatic model, if there is a rustling sound inside the gearbox, stepping on the throttle gearbox does not sound, then it is very likely that the gearbox has a different sound.
Abnormal transmission noise is usually caused by bearing or gear wear. When the car is refueling while driving, you can hear the noise coming from the chassis. The gear makes a "click" sound, the bearing failure will make a "rustling" sound, and when it is severe, it will become a "rattling" sound or "sighing" sound. Transmission maintenance costs are higher, so be sure to check frequently and change oil frequently.
The brakes are loud
This should be the most common anomaly. A step on the brake will "hiss" the call, one is that there may be a hard object in the brake; second, the brake pad may be about to be worn out and needs to be replaced; if the above two points are not, it may be because the brake pad is harder, and replacing a softer brake pad should solve this problem.
Of course, the brake pads generally have some hard metal chips at the bottom, which are deliberately put in during production, grinding these debris, it will make a hissing sound of metal friction, that is, to tell the owner that the brake pads are almost gone, at this time it is time to replace the brake pads.
Hanging noise
Driving on the road, especially on bumpy roadsides, the suspension will make all kinds of strange sounds, this time you should pay attention to, sometimes this is a normal bumpy sound or it may be a potential car failure.
In general, the suspension system is still difficult to determine, you need to go to the professional 4S shop repair shop to lift the car up to check, do not blindly change parts.
Abnormal noise is mainly due to the looseness of some parts, or the wear of some parts, if the car has a collision accident, it needs a more thorough and meticulous inspection. At the same time, it is also necessary to check whether there is an aging phenomenon in each rubber sleeve, if the aging situation is not serious, you can spray anti-rust lubricants similar to WD-40 to the rubber sleeve, which can play a role in lubrication and reduce the occurrence of abnormal noise.
The steering wheel is unusually loud
The importance of the steering wheel goes without saying, and without the direction, what remains is an accident. The main reasons for the abnormal noise of the steering wheel are:
1. The steering tie rod ball head is aging and open. Replace the steering tie club ball head, but after the replacement, four-wheel positioning is required. The steering machine dust jacket leaks oil, replace the dust jacket or re-beat the butter to solve.
2. Steering machine failure. If there is a strange sound of "clucking and clucking" in the direction of the hit, it may be caused by the excessive clearance of the steering machine with the gear, and the steering machine needs to be replaced.
3. Help the belt elasticity is improper or aging. For mechanical hydraulic assistance, if the assist belt is improperly tightened or aged, there will be a strange noise, adjust the belt tightness or replace the belt.
4. Airbag hairspring fault inside the steering wheel. This is mainly for the car that has removed the steering wheel, it may be that the airbag hairspring is broken or the airbag hairspring plug is not inserted, and it can be replaced or fixed at the 4S shop.
The engine skid plate is abnormal
Screws in the often moving car will often occur displacement, if you often hear like the air intake grille position issued by the "crackling" of the abnormal sound, in addition to the grille really loose, then the owner still has to check whether the engine guard plate screw is loose, or the engine guard plate and the negative plate are loose, the resulting abnormal sound, in addition to tightening the screw, should also be in the abnormal sound part of the pad some cardboard items, you can easily eliminate the abnormal sound.
The front windshield is unusually loud
There is a creaking sound in the front windshield, which is a strange sound that seriously affects the mood of the people in the car. In fact, when encountering the sound of the front windshield, it is usually not the assembly process problem of the manufacturer, but the front windshield may enter the foreign body or dust, which needs to be cleaned.
Low-speed bumps ring out
In this case, the first thing to do is to check whether the sound comes from the glove box, armrest box or trunk and other places to store items, if this is excluded, it basically belongs to the problem of the automobile assembly process, want to solve the root problem is basically no play, can only take the glue strip, pad rubber, fill sponge and other methods to alleviate and try to eliminate the abnormal sound.
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