What should I do if the Volkswagen Jetta chassis is abnormal?

Hello, it may be the following reasons, hope:

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.

Possible causes: a. Brake pads.

loose brake calipers or brackets;

b. Brake pads or brake discs.

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

Hello, if this car has abnormal chassis noise, it is generally caused by problems with shock absorbers or lower limb arms, and you need to go to the repair shop for a comprehensive inspection.

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In this case, see if there is an engine guard installed! Or maybe the exhaust pipe support bushing is broken!

If the car squeaks when driving slowly, it is likely to come from the suspension, which includes connecting rods, springs, shock absorbers and balance bars.

If you press 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, the brake cylinder, the master cylinder, the caliper is faulty, etc., which will lead to the abnormal sound of the braking system, which is mainly manifested as a sharp and continuous sound.

Precautions for low-speed driving.

Long-term idle or low-speed driving, then the air in the engine intake pipe will be reduced due to the low speed, you must know that the engine will more or less produce some carbon deposits when working.

If the air velocity becomes smaller, then the scouring effect on the valve carbon deposit is not large, and over time, it will lead to more and more carbon deposits. Some cars do not have closed-loop control of the engine when idling, which will lead to excessive exhaust gas, and will affect the work of the three-way catalytic converter for a long time.

It should be the chassis connector, (most of the rubber connectors are damaged) the rubber products of the rubber connector are generally 3-5 years, the rubber aging directly causes the knock between the metals, it is recommended to go to the maintenance station to check the rubber parts in the suspension system of the chassis.

I bought the new Jetta last year....There are a lot of abnormal noises on the chassis, and the reason cannot be found, only 17,000 kilometers.

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, you said that the sound covers a wide range, because there are many possibilities for the chassis sound, you see if you can catch a point, in what case, so that you can lock is the best problem.

Hello! Is there an under-engine guard?

Differentiation of squeak and noise of wheel bearings and rear axle noise.

When the car is driving and coasting, the noise of the front wheel bearing remains unchanged, if the speed of the vehicle remains the same and the brake is applied slightly, the wheel bearing can reduce part of the load, so that the noise can be reduced, and the noise source can be found.

When the speed is greater than 48kmh, unless the rear axle is seriously damaged, the noise of the rear wheel bearing can rarely be heard under normal circumstances, when the car is coasting or neutral, the cracked rear wheel bearing will produce a "rumbling" sound, and the corroded rear wheel bearing will make a "rustling" sound.

Distinguish the abnormal noise of the reducer tapered active bearing and the differential bearing.

The reducer bearings usually produce a harsh "rumble" or "rattle" sound, and the sound beat is stable and changes with the speed of the vehicle.

The sound of the front bearing of the bevel driving gear of the reducer is louder when the car is coasting, and the noise of the rear bearing is louder when driving.

The noise of the differential bearing is usually a constant harsh sound, but its beat is much more tempered than that of the reducer tapered drive gear bearing.

Noise resolution of rear axle gears.

In a normal straight line, the noise is not audible because there is almost no relative movement of the differential half-shaft gears and planetary gears.

During the driving of the car, the reason for the abnormal sound of the rear axle gear is mostly caused by poor lubrication, which leads to the reducer gear grinding scars, if the abnormal sound can be heard at various sliding speeds, it means that it is caused by the loosening of the nut of the reducer driving gear.

At low speeds, there is a knocking sound on the rear axle, and when accelerating or decelerating, it makes a particularly dull abnormal sound. The cause of the above fault can be found in one or more of the following places:

Improper clearance between the differential half-shaft gear journal and the differential housing.

Improper mating of the differential cross shaft journal with the differential housing.

The backlash between the half-shaft spline gear and the differential half-shaft gear keyway is improper.

Improper meshing backlash between the half-shaft gear of the differential and the planetary gear.

Improper backlash of the differential cone active and passive gears.

Thrust washers are worn.

When the vehicle is moving, the abnormal noise on the rear axle is due to improper clearance of the gear mesh, improper adjustment of the differential bearing preload, or both. When eliminating abnormal noise, it is necessary to disassemble and check the meshing gap between the differential gear and the reducer gear, the preload of the reducer bevel driving gear bearing and the contact traces of the reducer gear.

Is it advisable to check to see if there is a lower guard?

Summary. Hello, I am your exclusive technician, attentive, careful, dedicated to answering your questions, for you to find the corresponding solutions and solutions to the problem! If mine appears is not the result you want.

You can continue to ask me questions, and you need to describe the question in more detail so that I can provide you with more accurate information.

Hello, there are two reasons for the abnormal sound of the right rear wheel.

First, there is also abnormal noise when driving on a flat road, so the rear wheel bearing needs to be replaced.

Second, when the flat road is normal, and the abnormal noise is bad on the bumpy road, it is necessary to check the shock absorber and shock absorber pressure bearing.

It needs to be replaced. I hope I can help you and look forward to your next consultation.

What to do if the Jetta right rear wheel makes an abnormal noise.

Hello, don't worry, I can ask for your question, but wait a minute, I need text for about 2 minutes.

Hello, I am your exclusive technician, attentive, careful, dedicated to answering your questions, for you to find the corresponding solutions and solutions to the problem! If mine appears is not the result you want. You can continue to ask me questions, and you need to describe the question in more detail so that I can provide you with more accurate information.

Hello, there are two reasons for the abnormal sound of the right rear wheel, firstly, there is also abnormal noise when driving on a flat road, so the rear wheel bearing needs to be replaced. Second, when the flat road is normal, and the abnormal noise is bad on the bumpy road, the shock absorber needs to be checked and the shock absorber pressure bearing needs to be replaced. I hope I can help you and look forward to your next consultation.

A few days ago, many netizens asked about "what is the reason for the abnormal shock absorption noise in front of Volkswagen's new Jetta", and now I will explain it to you. Volkswagen new Jetta front shock absorber abnormal noise may be caused by oil leakage or bending of the shock absorber itself, shock absorption spring deformation, or wheel bearings, etc., after inspection and determination, it can be replaced directly, in addition to this, it may be because of the shock absorption pressure bearing aging or abnormal wear, this situation needs to replace the bearing or lubrication can be solved. Check for shock absorber faults: First check the shock absorber for oil leakage.

When it doesn't rain or wash the car, look directly at the shock absorber shell or dust jacket. You can see it at a glance. It's intuitive.

Then there's listening. When driving at low speeds, there is a clicking sound when the wheels pass through the raised part of the road surface or when there is a slight vibration. The abnormal noise of the shock absorber is different from other chassis, it is very bland.

In the case of the front shock absorbers, there are also noticeable shocks on the steering wheel. Find an experienced driver who can accurately determine which suspension is being issued. In addition, press the upper part of the wheel suspension section for each disassembled fiber by hand, such as the front and rear fenders.

The faulty shock absorber is pressed hard. This is a symptom of an oil leak in the shock absorber in the later stages. This can only be judged by an experienced maintenance digger.

Millions of car purchase subsidies.

Possible causes of the abnormal noise of the front shock absorber of the Volkswagen Jetta;

1.If the shock absorber itself is caused by oil leakage or bending, it can be replaced directly.

2.If the damping pressure bearing is caused by aging or abnormal wear, it can be directly replaced or lubricated.

3.If the damping spring is deformed, it can be replaced directly.

4.It is also possible that the wheel bearing is abnormal and can be replaced directly.

Second, check the shock absorber failure first looks:

1.Check the shock absorber for oil leakage. Look directly at the shock absorber housing or dust cover, and do not get wet in the rain or wash the car. You can see it at a glance. Very intuitive.

2.There is listening. When driving at low speeds, there is an abnormal sound when the wheels pass through the raised part of the road surface or when there is a slight vibration.

The squeak of the shock absorber is different from the squeak of other chassis and is very dull. In the case of the front shock absorber, there is still a noticeable vibration on the steering wheel. Finding an experienced driver can tell exactly which suspension was delivered.

3.Also, press the upper part of the suspension section of each wheel by hand, such as pressing the front and rear fenders. The faulty shock absorber is pressed hard. This is a symptom of oil leakage in the later stages of the shock absorber. This can only be judged by an experienced service technician.

4.If the shock absorber fails, it can only be replaced, not repaired.