There is no reason why the car squeaks and wants to run faster?

Normal. When the weather gets cooler, the rubber parts are heated and expanded.

The hardness increases and the gap between the parts is maintained.

Decreased, so when the vehicle is driving at low speed, it is subjected to pressure and there is a friction noise. Most cars will have this sound in autumn and winter. It's not that the parts are broken.

So you can use the car with confidence. If you really can't accept the sound, you can use fossil powder or toner to lubricate the rubber sleeve and the sound will be eliminated. But don't lubricate with oil, as the oil is more likely to attract dust.

The reason why the chassis creaks when the car is driving: 1. The chassis makes a creaking sound when the car is driving, which is the link between the MacPherson suspension and the shock absorber. You can park the car in a relatively quiet place and turn off the engine, press the 4 shock absorbers with both hands, and press the body up and down to make the body shake up and down, and listen carefully in the process of shaking, you can hear which part of the sound is coming from.

2. If the sound is not the sound of the friction between the tire and the ground, it can only be the sound caused by the damage of the outer cage. Replace the outer cage to eliminate squeaky noises. If it is the sound of the tires rubbing against the ground, it is recommended to do a wheel alignment.

3. The creaking sound of the rear wheel may be from the connection between the rear axle and the shock absorber, first check the screws at the connection between the rear axle and the shock absorber to see if there is any looseness.

Car precautions: (1) Before getting into the car, be sure to look around the vehicle to determine the safe driving without obstacles.

2) When starting, if you feel that the engine power is insufficient and the engine is about to turn off, immediately step on the clutch pedal and start again.

3) The clutch pedal must be carried out according to the essentials of action. If the relaxation is too slow, the contact surface between the clutch friction plate and the pressure plate and the flywheel will wear faster, resulting in damage to the clutch components. The clutch pedal relaxes too quickly. If you press the accelerator pedal too little, it will stall the engine.

4) The refueling of the accelerator pedal should be flexible and gradual. Excessive refueling will cause the car to "spasmodic" forward impulse, which not only affects safety, but also damages the transmission parts of the car. When starting, if you can't get into gear once, you can release the clutch pedal once and then hang it, or try to hang other gears first, and then hang the starting gear.

5) After the car starts, it is not allowed to turn the steering wheel immediately and drive into the middle of the road, and it should gradually enter after confirming the safety.

The above content reference: Encyclopedia - Start.

There is a high probability that the teeth of the drive gear are broken or the surface is damaged. Generally speaking, there are many reasons for this phenomenon, and it is necessary to check and repair it in time.

If the car makes an abnormal noise when idling, press the clutch.

After the abnormal noise disappears, it means that the abnormal sound is the gearbox.

Fault. Abnormal noise in the gearbox is generally caused by wear of bearings or gears. There are many parts in the gearbox, and the causes of noise are more complex.

Therefore, no matter what abnormal noise occurs, it needs to be repaired in time. When the car is driving at low speeds, there is a squealing sound similar to the siren of a fire engine, a squeak when accelerating or decelerating, and a hot rear axle.

This is usually due to the fact that the flank clearance is too small.

The car squeaks and the brakes disappear.

The reason why the car squeaks and slams on the brakes disappears is because sometimes some grit falls on the brake pads.

above, while the brake discs.

It squeaks when you swipe it, but when you press the brakes lightly, the grit falls, so the abnormal noise disappears.

If this is the case above, then you don't need to pay attention to it, but if there is an abnormal noise all the time while driving, then you need to replace the brake pads. The brake pad is the consumable pad of the car, in the process of use, it will become thinner with time, and when the friction layer is close to being used up, there will be an alarm device on the edge of the brake pad, that is, the limiting iron plate of the brake pad.

If you continue to use it, you will have a screeching metal grinding sound, and you will need to replace the brake pads with new ones to fix the problem.

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 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 identification method of car noise:

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.

1.Causes of gear teeth. If the gear that drives the gear has a broken tooth or a surface damage, it will cause a creak. At this time, the driver should not ignore it and should pull over first and inspect the vehicle. As.

2.Causes of loose gear parts. When the car is driving on the road, the gears inside the car will work together to drive the car to operate normally. If one of the gears is too loose, it will cause the car to pass by.

3.Other reasons. If there is an abnormality in the power system such as the engine and transmission, it will also cause a rattle. It is recommended that the driver go to a professional maintenance agency in time to conduct a comprehensive inspection of the car.

The reasons why the car creaks at low speed and disappears after speeding up are as follows:

1. It is very likely that the gear teeth of the driving gear are broken, or the surface is damaged, at this time, you should pull over to check, if the gear is damaged, you should replace the new gear in time.

2. It may be the abnormal sound caused by the loosening of the link parts of the wheel, the transmission of the wheel has many gears, if it is too loose, it will make a noise when cornering.

For the abnormal noise, some come from the engine, transmission and other power systems, this kind of abnormal noise if you change the speed or driving mode, the abnormal noise will change, and the abnormal noise comes from the bearing, rubber sleeve and related suspension parts of the material, etc., many of them are occasional, and will appear under specific conditions, which requires maintenance personnel to have a certain amount of experience accumulation and comprehensive maintenance judgment ability.

Precautions for use in low gears

From the initial start, with the exception of the Snowflake 2nd gear in some brand models, the starting effect and effect of the low-speed gear and any other forward gear are the same, and the automatic transmission starts in 1st gear. However, as the speed increases, when the driver releases the accelerator pedal, the car in D gear will not slow down quickly, and the car in low gear will slow down rapidly.

But if you don't press the brake pedal at this time, the brake light will not light up, and it can't effectively remind the car behind. When accelerating, the acceleration effect of the low-speed gear in the speed range of the first gear will also be greater than that of the D gear, and it will also be more noticeable as the speed increases. Therefore, when using low-speed gear to follow the car, the acceleration and deceleration should be controlled, and the vehicle should be avoided as much as possible to avoid the vehicle running or braking sharply, so as not to cause a rear-end accident.

Loose chassis generally occurs in older cars, when the car is driving in bad road conditions, the steering wheel will feel unstable, the bottom of the car will also come out of the abnormal sound, usually the old driver can feel the overall a little loose, when encountering such a situation, it means that the chassis may be loose, and the reasons for this situation are divided into several, only by understanding the reasons, can we better prevent this problem from happening.

The first reason is the aging of rubber parts, we all know that the elasticity of rubber is particularly good, which can buffer the friction between parts and reduce noise at the same time. However, this kind of thing has a lifespan, and it will age after a long time, and the elasticity is not as good as before, so the buffering capacity will decrease, resulting in abnormal noise in each part, so it is necessary to check these rubber parts regularly and replace them in time.

The second possibility is the reason for the shock absorber, the main role of this part is to inhibit **, when the car is driving in the dustpan section, it will have an impact with the road surface, and the shock absorber can well ensure the smoothness of the car, if the shock absorber is damaged, there will be a scoop phenomenon, so that the chassis is loose, so usually check the shock absorber, if there is a leakage to repair in time.

The third is the gap of the parts, that is to say, the ball head may be loose, this part is like the joint of the human body, if the ball head is loose, there will be a large gap between the lever and other connected parts, if the screw will be loose, then the chassis will become loose, so usually check these two parts.

Abnormal noise can be regarded as a big hatred of car owners, they think that the car is driving too fast, and then there is abnormal noise, but when driving slowly, there will still be a squeak, there is really no way. Indeed, abnormal noise is a more difficult fault, and there are many abnormal noises. If not addressed in time, it may evolve into a major security hazard.

Then let's take a look at the reason for the car creaking. 1.If the car squeaks while driving slowly, it is most likely from the suspension.

The suspension of a car includes connecting rods, springs, shock absorbers, and balance bars. If there is an abnormality in one of the parts, such as a loose bolt, there may be an abnormal noise due to shaking. 2.

If you press the brakes lightly and find that the abnormal noise increases, then there must be a problem with the braking system, such as the brake pads are too thin, the brake disc and brake pads are worn unevenly, and the brake cylinder, master cylinder and caliper fail, which will lead to the abnormal sound of the braking system, which is mainly manifested as a sharp and continuous sound. 3.If the engine belt is loose, it will squeak.

At this time, we can try to hold the belt between our fingers and twist it. Note that the operation should be carried out when the engine is cooled, and the torsion angle should generally be below 90 degrees, otherwise the tightness should be adjusted. 4.

Components are aging. This may occur where there are rubber parts. One place to note here is the rubber pads of the engine mounts.

If it ages, hardens, or cracks, it can cause the car to vibrate, the steering wheel to tremble, and the noise to increase. In addition to the four points mentioned above, there are many factors that may cause abnormal car noise, which will not be detailed here. We need to be clear that abnormal car noises are like a sign of car breakdown, and should not be taken lightly.

It is important to pay attention to it.

Abnormal noise, can be called a big hatred of the owner, thinking that the car is driving too fast and then produces abnormal noise, but slow driving still has a squeak, in the face of it, really helpless. Indeed, abnormal noise is a relatively difficult fault to deal with, and there are a lot of abnormal noises, if they are not solved in time, I am afraid that it will evolve into a great safety hazard. So let's look at the causes of the squeaky squeak of the car.

1. If the car squeaks when driving slowly, it is likely to come from the suspension, which includes connecting rods, springs, shock absorbers and balance rods, and one of the components is abnormal, such as loose bolts, which may cause abnormal noise due to shaking.

2. If you step on the brakes lightly and find that the abnormal noise increases, then it is certain that there is a problem with the braking system, such as the brake pads are too thin, the brake disc and brake pads are worn unevenly, and the brake cylinder, master cylinder, caliper is faulty, etc., which will lead to abnormal noise in the braking system, which is mainly manifested as a sharp and continuous sound.

3. If the engine belt is loose, then there will also be a squeak, at this time we can try to clamp the transmission belt with our fingers, and then twist it, pay attention to the operation should be carried out under the condition of the engine cooling, the twist angle should generally be below 90 degrees, otherwise the tightness must be adjusted.

4. Aging of components, this situation may occur in places with rubber parts, here we should pay attention to a place, it is the engine mount rubber pad, if it ages and hardens or cracks, it will cause the car to increase vibration, steering wheel trembling, and noise to become louder.

In addition to the four points mentioned above, there are many factors that may cause abnormal noise of cars, which will not be introduced in detail here. We must be clear that the abnormal noise of the car is like a harbinger of car failure, which cannot be taken lightly, and what needs to be paid attention to is still to be paid attention to.