What is the case when the left front wheel is driving?

Regarding the abnormal sound of the left front wheel of the car, there are the following situations:

1. If it is a clattering sound and abrupt, the faster the speed, the faster the sound, it is a foreign object on the tire, such as stones and nails. You can park your car and get out of the car to take a look.

2. If there is an intermittent gurgling sound or knocking sound when turning, crossing a hurdle, or walking a bad road, it may be that the outer ball cage and shock absorber of the left front half shaft are broken or the ball head of the chassis suspension is worn, and the bushing is worn. Go to the repair shop as soon as possible to check out potential safety hazards.

3. If you hear an obvious buzzing sound when driving, the faster the speed, the louder the sound, the biggest possibility is that the left front wheel bearing is broken.

The type and construction of the frame.

According to the structural form, automobile frames can be divided into side beam frames, middle beam frames, comprehensive frames and beamless frames. Many sedans and buses do not have a separate frame, but instead of a frame, the main components are attached to the body, and this body is called a load-bearing body. The underbody of this structure is reinforced with longitudinal beams and beams, and the body is stiff and lightweight, but the manufacturing requirements are high.

If it is a new car is normal, the new disc and disc are in a run-in state, which leads to a variety of reasons for abnormal brake noise, rust in water, stones and brake pads stuck in the middle of the disc and sheet.

There are larger metal particles. It doesn't matter as long as it doesn't affect the performance of the brakes.

There are many reasons for the abnormal noise of the front wheels: 1. Rhythmic sharp sound This may be the friction sound caused by the gap between the brake pad and the brake disc is too small. 2. Continuous squealing may be the bearing is broken. 3. The continuous dull sound may be a problem with the transmission shaft.

Because what you said is not very specific, according to what you said, you can also experience whether the sound changes during neutral and drag gear, if so, it is likely to be the cause of the propeller shaft.

Hello, this situation needs to be specific to determine the location of the sound for further maintenance, the right front wheel has an abnormal sound, it may be caused by hard spots on the surface of the brake pads.

1. There are foreign objects on the tires, such as stones, and cans are stuck to them. Check and clean up in time.

2. Abnormal noise of brake pads, this situation is likely to be that the brake pads are almost worn out and need to be replaced.

Here's how to fix it:

1. Look at the thickness: the thickness of a new brake pad is generally around the right, and the thickness will gradually become thinner with continuous friction in use.

2. Feel the strength: when taking emergency braking, you will obviously feel that the pedal position is low, and it may be that the brake pads basically lose friction, and they must be replaced at this time, otherwise it will cause serious accidents.

3. Listen to the sound: If there is a slight sound or shouting of "iron rubbing iron" at the same time as the brake is tapped, it may also be the effect of the brake pad running in at the beginning of installation), the brake pad must be replaced immediately.

4. Look at the warning light: whether the brake warning light on the dashboard is lit is used as the basis for judging whether the brake pads should be changed.

If there is an abnormal sound on the left front wheel, it may be caused by the left front wheel's suspension space becoming larger, or it may be caused by a malfunction of the shock absorber on the left front wheel.

If there is a noise on the left front wheel of your motor, to judge this problem, you need to look at the tire a little to see if there is any abnormality? And then there is the bearing, is there a problem? Another is the shock suspension, go to the maintenance department to check it, and then do the dynamic balance.

When the car is driving, the left front wheel sounds, it is recommended to check the tire of the left front wheel to see if the tire is stuck on the pebble caused by the abnormal sound caused by the friction of the vehicle and the road surface.

When the car is driving, if the left front wheel keeps ringing, this should be a problem with the brake pads inside, and this needs to be repaired.

Hello: The left front wheel of the vehicle has a sound when driving, it is recommended to check the left front wheel brake pads, left front wheel bearing.

Hello, this problem can be roughly judged to be a problem with the bearing of the left front wheel. The specifics are yet to be checked.

Abnormal wheel noise: Abnormal wheel noise is likely to be caused by untimely maintenance of the vehicle, or often driving on bad roads, resulting in uneven wear of tires, and serious wear of tire bearings.

It is difficult for ordinary car owners to distinguish which ones are abnormal noises and which ones are imitation abnormal noises. When I went to the repair shop to inspect the vehicles on the abnormal noise bridge tour, only nearly 20% of the cars really had problems. Models equipped with turbocharged engines are different; 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 due to their lack of understanding of mechanical knowledge, they mistake reasonable abnormal noise as a vehicle failure.

Therefore, learn to 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, to use a screw or other metal rod as a stestological instrument to contact the sound part to amplify the sound, or to reduce the sound by using a single cylinder fire cut-off to meet the needs of diagnosis. The auscultation site should be kept quiet to minimize human interference.

The front wheel bearings are rusty.

History: The wheel was gradually discovered by humans in the labor practice of carrying things. In primitive societies, our ancestors lived by gathering and hunting, and at first, they had limited access to food, which they could easily bring back with them.

Origin: The wheel is often regarded as the oldest and most important invention of mankind, so much so that we often compare it to the use of fire. In fact, humans have tamed fire for more than 1.5 million years, and it has only been 6,000 years since the wheel was first used.

Purpose: The most common use of making pottery wheels on potter's wheels is transportation. Before the invention of the wheel, the ancients had to use skids to carry heavy loads.

The simplest skidding is an inclined plane, and the more complex ones will have a few rollers under the rotten weight - the ancient Egyptians used the cherry blossom method to pile huge stones into pyramids.

There are two causes of abnormal noise when the left front wheel of the car is driving: abnormal noise at low speed and abnormal noise at high speed. The former is due to the misalignment of the four wheels or the latter is the cause of damage to the wheel bearings.

The following are the specific reasons: the alignment of the four wheels is inaccurate: there is a rhythmic hum at low speeds, and the noise is reduced at high speeds.

Reason: The four-wheel alignment of the vehicle is not accurate, the tire wears greatly after long-distance driving, the tire becomes eccentric, and the abnormal sound is emitted. Workaround:

Touch the pattern of the tire with your hands. If you can feel that the pattern inside or outside is uneven, it must be the cause of the abnormal noise. Be sure to do a four-wheel alignment first and then change the tires.

Wheel bearing damage: the abnormal sound is not obvious at low speed, and it emits a uniform humming sound at high speed. Reason:

This phenomenon occurs when a vehicle's wheel bearings are damaged. Long-distance driving on the bearings of the wheels to fight the hidden brother to ask for a very high air attack. When the bearing runs at high speed for a long time, the bearing with poor quality or long service time will be damaged due to fatigue and make abnormal noise.

Solution: Go to the service station to determine the location of the abnormal noise, determine which wheel is the problem, and replace it.

Possibility (1) is that the tire pattern is mixed with small stones, when it comes into contact with the ground, it will make a rhythmic sound, and the frequency increases with the increase of vehicle speed, but the sound does not change, you can check the item first (very simple, deduct it);

Possibility (2) Check the wheel bearing of the car, lack of lubricating oil leads to abnormal noise;

Possibility (3) After stopping, you can see whether there are parts, parts, wiring harnesses, etc. that interfere with the moving tires and wheel brake discs, and if there is interference, you can exclude interference.

To sum up the above, a simple way to judge, find a flat ground, put down the hand brake, turn off the engine, audio, etc., push the car away, listen carefully to which tire is the abnormal noise, and then eliminate the possibility of abnormal noise one by one, if you really can't find the reason, go to a professional car repair shop to study it. Hope it helps. Thank you.