1. There are abnormal noises in the body
Explanation of symptoms: When driving or stepping on the accelerator or braking, there are always abnormal noises in some parts of the body. not noisy and doesn't affect normal driving, but it's still a little worrying that something is wrong.
Problem analysis: This problem usually occurs because the rigidity of the body is insufficient, causing the vehicle to deform while driving, the door and frame to rub or shake, or desoldering to certain places causes friction between the steel plates. , etc. .
Some cars also have louder wind noise. To some extent this has to do with the shape of the car. In some cars, body parts are not properly secured and may be the cause. abnormal noise. Generally, tighten the screws. This can be resolved.
Solution: First check whether there are any loose objects in the trunk or rear seats that are easy to roll and make noise, and eliminate the noise caused by some loose items.
If you find that the friction between the door and window parts causes abnormal noise, you can stick tape on the doors and windows or put rubber on the friction parts. You may be able to reduce or eliminate the abnormal. noise, but the result will only treat the symptoms and not the root cause. If none of the above problems are found, you should go to a regular repair shop for inspection and troubleshooting.
2. There are abnormal noises in the engine
Explanation of the symptom: There is a greater possibility of abnormal noises in the engine compartment. Most people also judge that abnormal noises come from the engine. engine compartment depending on thesource of the sound, usually a metallic screech or hiss.
Problem Analysis: Abnormal noise coming from the engine compartment will include a loud whistling sound from the belt, which is usually caused by belt slippage. There will also be a sharp sound of dry rubbing of metal parts when the engine is running, which is usually due to damage to the bearings of the generator, water pump, and power steering pump. If the sound of air leaking is caused by the engine running, it may be the result of a blocked engine; exhaust system, vacuum tube leak or rupture.
Solution: Abnormal engine noise indicates that the technical condition of a certain engine mechanism has changed. This is mainly due to excessive wear of certain parts or poor assembly and adjustment. Certain abnormal noises can predict the possibility of accidental engine damage. Therefore,when abnormal noises occur in the engine, they should be repaired in time to prevent the fault from extending.
It is worth remembering that if there is an abnormal noise in the engine, the car owner is unlikely to be able to solve it himself and it is better to send it to the factory for maintenance.
What's wrong with the King Long Auto Light making a sound when it turns on?
Press the horn button and listen for any sound in the relay.
1. Correctly distinguish between normal and abnormal sounds.
When the car is running, the vibrations of various mechanisms will make sounds of different kinds, but the sound does not mean that the car is defective. In order to avoid unnecessary disassembly, you must first distinguish what is normal. abnormal sounds and sounds. Normal vibrations of various system components (such as noise on the motor surface), impact noiset of gears when changing gears, intake and exhaust noises using gas as a work source, gear meshing noises, etc. are all normal sounds. Abnormal noises (abnormal noises) can be classified as minor depending on their impact on the car's performance.Sounds, normal sounds and bad sounds. Slight noises, such as the flashing sound of high-voltage electrical leakage, the slight rolling noise of bearings, etc., are generally small in volume, the degree of wear of the parts is not large, and it does not There is no significant change for a long time. Such defects can still keep the car without repair normal driving.
3. When diagnosing abnormal car noises, attention should be paid to creating good auscultation conditions and trying to eliminate interference from 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 screwdriver or other metal rod as a stethoscope to contact the sound part to amplify the sound , or use a single cylinder to cut off the fire to reduce the sound, to meet the diagnostic needs. The monitoring site must remain quiet to minimize human interference.
3. Below we list some common abnormal car noises that are easy to eliminate along with simple methods of identification and elimination.
1. There are abnormal noises in the body
Symptom description: When you drive and step on the accelerator or when braking, there are always abnormal noises in some parts of the body. The sound is not loud and does not affect normal operation, but there is always a little worry that something is wrong.
Problem Analysis: This problem sIt usually occurs because the rigidity of the body is insufficient, causing the vehicle to deform while driving, the door and frame to rub or shake, or desoldering in some places causes friction between the steel plates. , etc. .
Some cars also have louder wind noise. To some extent this has to do with the shape of the car. In some cars, body parts are not properly secured and may be the cause. abnormal noise. Generally, tighten the screws. This can be resolved.
Solution:
First check whether there are any loose objects in the trunk or on the rear seats that are easy to roll and make sounds, and exclude some items that are not securely attached and emit sounds. . noise.
If you find that the friction between the door and window parts causes abnormal noise, you can stick tape on the doors.your and windows or put rubber on the friction parts. You may be able to reduce or eliminate the abnormal. noise, but the result will only treat the symptoms and not the root cause. If none of the above problems are found, you should go to a regular repair shop for inspection and troubleshooting.
2 Abnormal noises in the cabin are usually metallic harshness or wind whistling.
Problem Analysis: Abnormal noise coming from the engine compartment will include a loud whistling sound from the belt, which is usually caused by belt slippage. There will also be a sharp sound of dry rubbing of metal parts when the engine is running, which is usually caused by damage to the bearings of the generator, water pump and power steering pump if it is sound of air leaking when the engine is running;
The car's headlights maybecome short-circuited or age, resulting in increased power consumption and humming noise. ?
1. Correctly distinguish between normal and abnormal sounds.
When the car is running, the vibrations of various mechanisms will make sounds of different kinds, but the sound does not mean that the car is defective. In order to avoid unnecessary disassembly, impact of gears should be carried out. be timed first. Sound, intake sound, exhaust sound, gear noise, etc. which use gas as a working source are all normal sounds. Abnormal sound (abnormal noise) can be divided into light noise, normal noise and malignant noise according to the impact on car performance. Slight noises, such as the flashing sound of high-voltage electrical leakage, the slight rolling noise of bearings, etc., are generally small in volume, the degree of wear of the parts is not large, and it does not 'yhas no significant change for a long time. Such defects can still keep the car without repair normal driving.
3. When diagnosing abnormal car noises, attention should be paid to creating good auscultation conditions and trying to eliminate interference from 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 screwdriver or other metal rod as a stethoscope to contact the sound part to amplify the sound , or use a single cylinder to cut off the fire to reduce the sound, to meet the diagnostic needs. The monitoring site must remain quiet to minimize human interference.
3. Below we list some common abnormal car noises that are easy to eliminate along with simple methods of identification and elimination.
1. There are some noisesrmals in the body
Symptom description: When you drive and step on the accelerator or when braking, there are always abnormal noises in some parts of the body. The sound is not loud and does not affect normal operation, but there is always a little worry that something is wrong.
Problem analysis: This problem usually occurs because the rigidity of the body is insufficient, causing the vehicle to deform while driving, the door and frame to rub or shake, or desoldering to certain places causes friction between the steel plates. , etc. .
Some cars also have louder wind noise. To some extent this has to do with the shape of the car. In some cars, body parts are not properly secured and may be the cause. abnormal noise. Generally, tighten the screws. This can be resolved.
Solution:
First check whether there are any loose objects in the trunk or rear seats that are easy to roll and make sounds, and exclude some items that are not securely fixed and make sounds. . It may be possible to reduce or eliminate the abnormal noise, but the result is only a temporary solution and not a permanent cure. If none of the above problems are found, you should go to a regular repair shop for inspection and troubleshooting.
2. There are abnormal noises in the engine
Explanation of the symptom: There is a greater possibility of abnormal noises in the engine compartment. Most people also judge that abnormal noises come from the engine. engine compartment depending on the source of the sound, usually a metallic screech or hiss.
Problem Analysis: Abnormal noise coming from the engine compartment will include a violent whistling sound from the engine.goose, which is usually caused by belt slippage. There will also be a sharp sound of dry rubbing of metal parts when the engine is running, which is usually due to damage to the bearings of the generator, water pump and power steering pump