What s the reason for the squeaky noise in the car?

There is a squeak in the car driving, which may be due to the following reasons:,1Squeak when the car is cool:

It is caused by loose or aging of the belt. Usually idling for a while without sound, let the auto mechanic check the tightness and aging of the belt. ,2.

Squeak when stepping on the brakes: Most of the brake pads circulating on the market are ceramic brake pads, and each brake pad uses about 5-80,000 kilometers per kilometer. The squeak of the brakes is caused by the brake pads being thin, and the brake pads need to be replaced.

3.Squeak in the direction of playing: The squeak of the steering wheel is caused by damage to the steering ball joint.

If the direction is played on the spot, it may also be caused by the shock absorbing pressure bearing, which is composed of small beads, and the beads will squeak without lubrication. ,4.Stepping on the clutch squeak:

If the manual transmission vehicle squeaks when the clutch pedal is pressed, and the abnormal sound of the pedal is released, it is often caused by damage to the clutch bearing. At this time, it is necessary to lift down the gearbox to replace the clutch and check the clutch pressure plate and other objects.

Several causes and solutions for abnormal door noises:

1. There are small things in the door trim panels, such as lighters, coins, etc. It is advisable to clean up the mess.

2. The interior trim panel or audio is loose, this fault can be found by shaking it by hand, or pressing the abnormal noise when driving, if the abnormal sound disappears, it is a fault here, and it can be re-tightened.

3. The door hinges (hinges) are rusty, this phenomenon will be heard when the door is opened and closed, clean the hinges and apply some butter.

4. The door sealing strip is aging, and the door sealing strip will also have this failure if it has not been maintained for a long time, the best way is to buy a bottle of silicone grease to maintain it yourself, apply the silicone grease to the sealing strip, and wipe it off after absorbing for an hour, it will have a good effect.

5. If the door lock block is in poor contact, there is a gap or the lubrication is not good, you can apply butter at the lock block or wrap two circles of waterproof tape around the lock pin.

You don't even know that the abnormal noise is coming out in **, who knows what the reason is??

If you hear the abnormal sound of "Zizi" in the process of driving, and this is the abnormal sound caused by the problem of the engine belt, because the abnormal sound of "Zizi" is mostly the aging of each belt group of the engine, or the belt is too loose caused by the problem of the tensioner, the friction abnormal sound, belt slippage, etc., if there is a similar "Zizi" abnormal sound, then look for the major belt groups and tensioners inside the engine, such as engine timing belt, generator belt, circulating water pump belt, air conditioning belt, power pump belt, etc. The problem that causes this abnormal noise is the abnormal sound of the engine belt, which is caused by the smooth grinding surface of the joint surface of the belt and the pulley. It usually occurs when the engine speed changes rapidly, and sometimes the belt rings when the load of the attachment driven by the belt increases.

How to solve the problem of abnormal noise of engine belt.

1. Check whether the accessories driven by the belt are damaged, stuck, loose or the power of the accessories has increased.

2. Replace the belt, or use 100 gauze to polish the joint surface of the pulley and the belt (light grinding is fine).

3. The temporary solution can be to drop 1 2 drops of oil on the joint surface of the belt and the pulley (it will not affect the belt slippage).

If it is the generator belt that rings and the headlights are more obvious, you have to take off the generator belt, turn the motor pulley to see if the generator rotates smoothly, if the generator is normal, you can check whether the battery is not stored power, because the battery storage is not good will increase the load of the generator.

The reasons for the squeaky sound when the car is driving: 1. Check the brake system: if the vehicle squeaks when 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; 2. Check the tightness of the belt

Sometimes the car belt is loose, there will be a squeak, you should go to the repair shop to check the belt, tighten it properly to see how the effect is; 3. Squeak when stepping on the clutch: If it only squeaks when stepping on the clutch, and the sound of releasing the clutch disappears, it means that the vehicle separation bearing is damaged and should be repaired as soon as possible; 4. Check whether there are foreign objects in the engine compartment: If the squeak occasionally comes out of the engine compartment, open the front cover and carefully check whether there are any foreign objects, such as animal carcasses and hard objects.

When the clutch release bearing is damaged, the clutch plate cannot be completely disengaged, which eventually leads to an abnormal sound during acceleration.

On the issue of abnormal noise of automobiles, 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. In the case of a turbocharged engine, there is a must be a difference between the sound and the sound of a naturally aspirated engine; Models with engine guards may also make noises due to friction; After some pure brother car owners come into contact with different cars, it is likely that they lack their own understanding of mechanical knowledge, so they can distinguish the abnormal noise of the car and avoid wasting time and energy.

Second, the car sound of the old and dry method:

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 reasons for the squeaking sound when the car is driving are: 1. If the vehicle squeaks at a slow speed, it is likely to come from the suspension, and the suspension of the trapped car includes connecting rods, springs, shock absorbers and balance rods. 2. If it is issued in the car, it is necessary to check whether the airbag hairspring under the steering wheel and the cross universal joint inside the direction column are normal; 3. If there is an abnormal noise outside the vehicle, it is necessary to check whether the plane bearings above the lower two front shocks are worn, whether the ball head of the steering machine is loose, and whether the rack and pinion inside the steering machine are worn.