The chassis of the Hyundai Elantra is abnormal, and what will be the impact of the seventh generatio

In general, the causes of abnormal chassis noise are roughly as follows:

1. Interference between parts.

Possible cause: The two parts affect each other due to impact or the installation of other equipment.

2. Loose bolts or nuts.

Possible reasons: a. Driving on the road with poor road conditions for a long time, the bolts are naturally loosened;

b. Improper disassembly and installation of bolts damage;

c. The tightening torque is not enough or the bolt specification is wrong.

Solution: Tighten or replace the bolts and nuts.

3. The universal joint of the transmission shaft is faulty.

Possible causes: Dust cover cracked or oil leakage caused by failure to repair in time.

Solution: Replace the new transmission shaft universal joint.

4. Abnormal noise caused by damage to each ball joint, suspension and connecting bracket.

Possible causes: After long-term use, the ball joint is loose or the rubber liner is aging and cracking.

Solution: Replace the ball head or support pad with a new one.

5. Abnormal noise of braking system.

a. Loose brake pads, brake calipers or brackets;

b. Brake pad or brake disc failure;

Solution: Check whether the braking system is loose and whether the brake pads and brake discs are abnormally worn.

6. Abnormal noise of hub bearing.

It occurs at a certain speed, with a "buzzing" sound, and increases with the increase of vehicle speed.

Possible causes: Most of them are caused by ablation of hub bearings.

Solution: Replace the wheel bearings with new ones. (It is recommended to replace both sides at the same time) 7. Abnormal tire noise.

a. The tire itself is a problem.

b. Abnormal tire wear.

Solution: Check whether the tire is abnormally worn, if there is, check whether the chassis is loose and improperly assembled, etc., if not, it is a problem with the tire itself.

8. Abnormal noise of the transmission.

Possible causes: Worn internal gears or low oil.

Solution: First check whether the transmission lubricating oil is sufficient, if there is no external failure, you can only unpack and check.

9. Clutch abnormal noise.

Generally, there will be an abnormal sound after pressing the clutch pedal.

Possible causes: Separation bearings are caused by less oil wear.

Solution: Replace the release bearing with a new one.

1. No matter what "abnormal noise" there is, find the problem, repair it in time, and do not delay, which is the premise.

2. According to the results of the inspection, timely treatment, repair and fixation of relevant faulty parts or personnel reasons such as missing, reverse installation and unfastening. Eliminate potential safety hazards.

3. It is recommended that the special car be repaired, directly sent to the after-sales service for maintenance, and if the problem is found, the after-sales maintenance can protect the original parts, and the second is to ensure the after-sales service, for the vehicle out of warranty, it is also recommended to go directly to the after-sales maintenance to ensure safety.

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, 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 clearance 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 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, so usually check these two parts. Thank you.

Hello, hope it helps.

1.It is possible that the brake pads are not properly installed or the bracket screws are loose.

2.Loose screws near the brake cylinder, 3In the suspension part, the front shock spring is not in place or the screws are loose.

Hello, if the chassis of the vehicle is abnormal, check whether the screws are loose, or the problem of suspension shock absorption.

Elantra turns to squeak and squeak.

Elantra turns to squeak and squeak.

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

1. Abnormal sound of disc brakes.

Features: When the vehicle is driving at a low speed on a flat road, it makes an intermittent and irregular "rattling" sound on the axle.

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 have fallen off.

Second, the front suspension ball head abnormal sound.

Features: When the vehicle is driving on the undulating road surface in a low-speed gear, 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 speed.

Reason: The gap between the ball head and the ball head seat becomes larger, and the looseness is severe. 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. Abnormal noise of the front wheel shock absorber.

Features: On flat roads, you can hear the "cooing" of the front of the vehicle, which is intensified 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 transmission shaft universal joint abnormal sound.

Features: If the front drive constant velocity joint is faulty, in the vehicle in motion, especially when cornering 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.

When checking the abnormal noise of the automobile chassis, you should first distinguish whether it is the sound of the engine or the sound of the automobile chassis. Only when the engine is running, under normal circumstances, the engine has an abnormal sound; When the car is moving, there is still a sound when the engine is turned off, neutral or when the clutch pedal is stepped on. It may be that there is a noise from the chassis of the car.

1. There is a sound caused by resonance. Most of the noise is caused by the engine guard and chassis resonance. Most of the resonances in the chassis are easy to observe, and the resonance is not always there, and most of them will only have a sound in a certain speed range of the engine.

2. There is a problem with the rubber sleeve of the balance bar. The phenomenon is that when the car passes over uneven roads, the chassis will make a noise.

The balance bar is also called the anti-roll bar and the stabilizer bar, and there are two buckles on the balance bar, and the buckle is the rubber sleeve of the balance bar. It is cold in winter and hot in summer, and with the erosion of soil and dust, it will become harder and harder after aging. When the car passes over uneven roads, the height of the upper and lower wheels is inconsistent, which will cause a creaking sound.

3. There is a sound due to loose bolts, such as loose bolts at swing arms, connecting rods, shock absorbers, etc. The reason is simple, it should be a fastener but it is not tightened, and it will naturally shake and cause a sound.

Here's how it affects the car by knocking the chassis:

1. The exhaust pipe is located at the bottom of the vehicle, which is also very weak, and when it hits a hard stone knife, it will even slip and break, and when it hits the chassis, the front bumper.

And the exhaust pipe is also relatively easy to be knocked on. 2. Generally, when it hits the chassis, it will cause scratches on the bottom of the car, and it will also cause deformation at the bottom, and in serious cases, it will cause the engine oil bottom to be destroyed, and the scratched part is easy to rust. 3. Knocking into the chassis may cause the brake hose to leak in modern cars.

The brake system widely uses hydraulic braking system, and it is easy to cause the brake oil pipe to rupture when it hits the chassis. 4. When knocking into the chassis, it is extremely ignitive and easy to make and virtual into an engine transmission.

If the oil pan ruptures and the oil leaks, it should be repaired as soon as possible, otherwise it will cause permanent damage to the engine.

The Hyundai Elantra is a typical Korean car with a 16-valve engine and an acceleration time of seconds. As Hyundai's best-selling model overseas, it has gone through six generations. Beijing Hyundai Elantra.

On the basis of its sixth-generation model, it has been slightly improved according to China's road conditions and climatic environment, and has been praised for its rich configuration and relatively high cost performance.

The reasons for the noise in the gear are improper operation, clutch failure, sprocket wear, and chain looseness.

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 were really faulty. 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 make 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 sound. The normal vibration sound of each cluster system component (such as the noise on the engine surface), 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 loss of the grinding belt of the machine is not large, and there is no significant change for a long time, and this kind of fault can still maintain the normal driving 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 interference from human factors.

It may be that the clutch is not in the end, Yuedong has a reverse lock, or it may be that the reverse lock is not in place.

But in my opinion, this sound is normal, it is a normal collision between gears, and most cars will have such a sound when they are in reverse gear, so don't worry.

The reasons why the Elantra chassis makes abnormal noises and does not sound when stepping on the brakes are as follows:

1. Shock absorber failure. The shock absorber is leaking or deformed, and when the vehicle passes over a bumpy road, the chassis will make an abnormal noise, and the shock absorber needs to be repaired or replaced.

2. The rubber sleeve of the balance bar is aging. If the rubber sleeve of the balance bar is corroded or aging, the height of the left and right wheels of the vehicle will be inconsistent, and the chassis will creak, and the rubber sleeve of the balance bar needs to be replaced.

3. Brake pad failure. If the abnormal noise is obvious when playing the steering wheel, and it feels that the abnormal noise is coming from under the front wheel, it may be that there is a problem with the brake pads and you need to replace the brake pads with new ones.

4. Lack of lubrication of tie rod ball joint. The lack of lubrication in the ball joint of the steering tie rod will also cause the chassis to make abnormal noises, and lubricating oil needs to be added.

5. The ball joint of the steering transverse pull seepage is damaged. Damage to the ball joint of the steering tie rod will cause abnormal noise in the chassis, and will also cause the direction of the vehicle to deviate, and it is necessary to replace the ball joint with a new one.

6. The outside temperature is too low. If the outside temperature is too low, the thermal expansion and contraction of the rubber parts of the chassis will be inconsistent, which will lead to abnormal noise in the chassis.

7. The separation bearing is damaged. During normal driving, there is no abnormal sound on the chassis of the car, and when the driver steps on the clutch, there is an abnormal sound, which may be because the release bearing is damaged and needs to be replaced with a new release bearing.

The reasons for the abnormal start noise of Hyundai Elantra cars: 1. Internal problems of the gearbox, such as excessive wear, resulting in clearance, and there will be an open space at the start; 2. The gearbox oil is dirty or the oil level is too low, resulting in a large shift impact; 3. The valve body of the gearbox is faulty, resulting in uneven gear shifting; 4. The front-wheel drive vehicle may be the front drive shaft, or the cage has too much space; 5. The transmission shaft is loose or the universal joint is faulty.

Elantra automatic transmission, when the speed reaches 130-140 kilometers, there will be abnormal noise. I have been to the 4S shop, and the repair staff did not find any problems, it is certain that this is not the sound of wind noise, it should be the sound of the machine, but it does not affect the use of the car, I don't know what the reason is.

Expert: From the experience of maintenance, after the speed of the car is high, there will be a sound of oil flowing, like the gearbox, the engine, this sound is very slight, not careful listening is inaudible, if it is this kind of sound, it is normal, you can not repair, but it must be noted that this sound can not become louder. If it is a new car, just start using it, driving no more than 3000 kilometers, you can drive for a period of time to see if this sound is gradually getting smaller.

Sometimes a new car needs to be run-in, and maybe this sound will get quieter and quieter. But if the sound is getting louder and louder, and it is the kind of iron hitting iron sound, you must go to the 4S store to find out what the reason is.

Expert: The engine of the Elantra has less torque at low speeds, and the gearbox of all cars produces some resonant sound at low speeds. This sound is not considered a fault, but when the torque increases, the gear noise generated by the gearbox, and if you want to overcome this noise, the speed is slightly lower when you start.

Photo by Pacific Automobile Network Q&A).