What s going on with the abnormal noise in the chassis of the car

The abnormal sound of the chassis of the car may be the abnormal sound of the suspension of the car. The suspension system of the car generally includes the upper and lower swing arms, balance bars, ball head shock absorption, etc., and the abnormal sound caused by the suspension system is generally a dull or crisp impact sound. For example, after the balance rod is damaged or the bushing is worn, there will be a continuous abnormal sound of "Gregrad" when passing through bumpy roads, and there will be a dull sound of "knock knock" when the shock absorption is damaged through pits or bumpy road sections.

If the vehicle has this kind of abnormal noise, it is best to repair it as soon as possible, as damage to the suspension system will lead to deviation from the direction and tires.

It is also possible that constant velocity joints are commonly known as cages, which are divided into inner cages and outer cages. If the vehicle turns in the middle of the driving and there is an abnormal sound similar to "rattle rattle", it is usually caused by serious wear and tear of the constant velocity universal joint, and you only need to confirm which side the abnormal noise is, and then replace the constant velocity universal joint can be solved.

Abnormal noise of automobile bearings. No matter how big the tires of the car, the connection between the body and the tires is by a small wheel core bearing, the core bearing is damaged, the vehicle will make a continuous abnormal sound similar to "buzzing", the faster the speed, the stronger the sound, if the bearing is slightly damaged, there will generally be abnormal sound when the direction is lightly hit. Severe bearing damage will cause the tire to deviate, and serious tire eating will cause the tire to fall off.

The above is the more common abnormal noise of the automobile chassis, if the vehicle has the above abnormal noise, it must be repaired and replaced as soon as possible. After all, there are many reasons for the abnormal noise of a car, so you have to go to the repair shop for detailed maintenance.

The reason for the squeaky sound of the automobile chassis: it may be that the claw pad of the engine is installed in a misaligned position, which causes some components to resonate or shake when working, and the friction between two adjacent parts, of course, it is not excluded that it is caused by the damage of some parts.

The reason for the squeaky sound of the automobile chassis: it may be that the claw pad of the engine is installed in a misaligned position, which causes some components to resonate or shake when working, and the friction between two adjacent parts, of course, it is not excluded that it is caused by the damage of some parts.

Various possible causes of abnormal noise in the chassis of a car.

1. Abnormal noise characteristics of disc brakes: when the vehicle is driving on a flat road at a low speed, it makes an intermittent and irregular "rattling" sound of the huai chain at the axle part.

Reason: This is due to the damage, deformation and falling off of the brake shoe support plate, vibration damping spring plate or guide plate of the disc brake, which increases the gap between the brake shoe and the brake caliper support frame, and makes a sound when it hits each other. You can go to the repair station to repair the deformed parts and replace the parts that fall off.

Second, the front suspension ball joint abnormal noise characteristics: when the vehicle is driving in a low-speed gear on the undulating road, the front axle part emits an uninterrupted "click" sound, the worse the road quality, the louder the sound, and the sound intensifies with the increase of vehicle speed.

Reason: The gap between the ball head and the ball head and the bright seat becomes larger, and the looseness is serious. Because the ball head seat is a sealed structure and cannot be removed, it can only be replaced at the repair station in this case.

Three. Characteristics of the abnormal noise of the front wheel shock absorber: On the flat road, you can slightly hear the "cooing" sound of the front of the vehicle, and the sound intensifies when turning sharp corners.

Cause: Vehicles are often driven on bad roads and are not properly maintained, resulting in oil leakage and damage to shock absorbers. Depending on the severity of the damage, it will need to be repaired or replaced.

Fourth, the abnormal noise characteristics of the transmission shaft universal joint: if the front drive constant velocity universal joint is faulty, in the vehicle driving, especially when turning or accelerating sharply.

Reason: The abnormal sound of the constant velocity gimbal is due to the excessive clearance of the gimbal or the issuance of cards. The main reason for the abnormal sound of the universal cross shaft is that there is no lubrication device or the maintenance is not timely. In this case, you should go to the workshop to apply grease or repair.

There are many reasons for abnormal noise in the automobile chassis, including ball joints, rubber sleeves of supporting arms, connecting rods, shock absorbers, engine guards, etc. If these parts are loose or the gap is worn too much, the chassis will make a different sound and therefore need to be further inspected. The chassis of the car is composed of four parts:

Drivetrain, ride, steering, and braking systems. The chassis is used to support and install the automobile engine and its parts and assemblies, shape the overall banquet stool shape of the car, accept the power of the engine, and enable the car to move and drive normally. There are several reasons for the abnormal noise of the car chassis:

1。The abnormal noise when the vehicle starts is usually a suspension system failure, which can be caused by a loose or damaged engine mount; 2.The abnormal noise emitted by the vehicle when steering may be a fault of the steering system and suspension system, because the vehicle tilts and deforms the suspension system during the steering process, and also participates in the movement; 3.

The abnormal noise caused by the vehicle driving in good road conditions may be caused by the failure of the braking system components, or it can be caused by the loose wear of the braking system components, the unrounded brake drum or the uneven plane of the brake disc; 4.It is also possible that there is a problem with the bearing between the moving and stationary parts of the vehicle. If there is a problem with the bearing, the driver can see it by pressing the brakes slightly.

If the sound of the brakes does not change when the vehicle is driving at a constant speed, it means that there is a problem with the bearing.

1.Loose parts.

Cause: The two parts interact with each other due to violent impact or impersonation of other equipment.

2.Loose bolts or nuts.

Causes: Bolt loosening due to long-term driving on roads with poor road conditions; Unreasonable disassembly or installation leads to bolt damage. Insufficient torque.

Solution: Tighten the bolts and replace them if necessary.

3.Failure of the driveshaft universal joint.

Reason: The dust cover was damaged, and the oil leakage was not repaired in time, resulting in abnormal wear and tear of the small limb bearing.

Solution: Replace with a new outer (inner) cage or universal joint.

4.The ball joint, suspension, and bracket macro are damaged, and the ball joint, suspension, and bracket are damaged, resulting in abnormal noise.

Reason: Abnormal noise caused by loose ball joint and aging of rubber sleeve after long-term use.

Solution: Replace with a new ball head or bracket.

5.Abnormal sound of the braking system.

Causes: loose brake pads, loose calipers; Brake pad brake disc failure.

Treatment: Check whether the brake system is loose, whether the brake pads and brake discs are worn abnormally, and replace them if necessary.

6.Abnormal noise of wheel bearings.

At a certain speed, there will be a "buzzing" sound, but this sound will increase as the speed increases.

Cause: It is caused by abnormal wear or ablation of the bearing.

Solution: Replace the wheel bearing with a new one.

7.Abnormal clutch noise.

When the clutch pedal is pressed, there will be an abnormal noise, and when the pedal is released, the abnormal noise will disappear.

Reason: The clutch disconnect shaft is hungry for lack of oil, caused by abnormal wear.

Solution: Replace the clutch release bearing with a new one.

Hello! Glad for your question.

Loose chassis generally occurs in older cars, when the car is driving in bad road conditions, the steering wheel will feel unstable, and there will be abnormal noises from the bottom of the car, usually the old driver can feel that the whole is 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 types, only by understanding the reasons, can we better prevent the occurrence of this problem.

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 clearance of the parts, that is to say, the ball head may be loose, this part is like the joints 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 gap is too large, when crossing some dustpan roads, the screws between the subframe and the suspension will be loose, then the chassis will become loose and sluggish, so usually check these two parts. Thank you.

Hello, it may be that the rubber sleeve is worn out, it is recommended to take a break.

The chassis of the vehicle is equipped with many important parts, and many owners react that the vehicle has been used for a period of time, and the chassis of the vehicle has obvious abnormal noise, so what is going on with the abnormal noise of the automobile chassis?

The chassis of the vehicle has abnormal noises, which may be caused by the following reasons.

1. If the bracket of the vehicle engine is loose or damaged, the chassis will make abnormal noise when the vehicle starts.

2. If the steering system of the vehicle fails, the chassis of the vehicle will make an abnormal sound when the driver turns the steering wheel.

3. If the chassis has abnormal noise when the vehicle is driving on a flat road, it may be that the vehicle's braking system is faulty.

4. The wheel bearing of the vehicle is faulty, and the chassis will also make abnormal noises when the vehicle is driving.

When the owner uses the vehicle, if the vehicle is found to have abnormal noise, it is necessary to drive the vehicle to the car 4S shop in time, or a professional auto repair factory, and the professional staff will overhaul the abnormal noise of the vehicle to ensure that the functions of the vehicle can be used normally, so as not to affect the normal use of the vehicle by the owner.

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.