Qashqai brakes shake left and right, Qashqai steps on the brakes and the steering wheel shakes

1. Analysis of possible causes.

1. It is the lack of necessary maintenance of the brake system, there are too many impurities in the brake master cylinder, the sealing is not tight, the vacuum booster pump fails, the brake oil is too dirty or the air resistance occurs after the mixing of several brake oils after heating, the brake master cylinder or sub-cylinder leaks, and the air leakage of the gas tank or pipeline interface;

2. It is due to improper operation that causes the failure of the parts;

3. Due to serious overload, under the action of gravitational acceleration, the inertia of vehicle movement is increased, which directly leads to brake failure.

Second, the treatment method.

1. Control the direction according to the road conditions and speed, disengage the high-speed gear, and at the same time quickly blast the empty fuel and shift the high-speed gear into the low-speed gear. In this way, the engine will have a lot of traction resistance and the speed of the vehicle will be reduced rapidly. In addition, the handbrake should be used in conjunction with the low-speed gear shift, but it should be noted that the handbrake should not be tightened or pulled too slowly.

If it is pulled too tightly, it is easy to make the brake disc "lock", and it is likely to damage the transmission parts and lose the braking ability; If it is pulled too slowly, the brake disc will wear and ablate and lose its braking effect.

2. Use the bumper, carriage and other rigid parts of the car to rub and collide with natural obstacles (rocks, trees or soil slopes) on the side of the road to achieve the purpose of forcibly stopping and getting out of danger, and reduce the accident loss as much as possible.

3. If the brake fails when going uphill, it should be reduced to medium and low gear in time to maintain sufficient power to drive uphill to the top of the slope and stop. If you need to park on a half-slope, you should keep the forward low gear, tighten the hand brake, and the personnel with the vehicle should use stones, skids and other objects to jam the wheels in time. If there is a backward slippage, the rear of the car should face the hillside or the safety side, and the headlights and emergency lights should be turned on to attract the attention of the vehicles in front and behind.

4. When the downhill brake fails and the speed of the vehicle cannot be controlled by the mechanism of the vehicle itself, the driver should decisively use natural obstacles, such as rocks and trees on the side of the road, to cause resistance to the car. If you can't find a suitable terrain or object to use for a while, in an emergency, you can move one side of the car closer to the side of the mountain, and gradually reduce the speed of the vehicle by rubbing to increase the resistance.

5. The vehicle should step on the brakes when going down a long slope or a steep slope, regardless of whether there is a situation or not. It can not only test the performance of the brakes, but also buy time to control the speed of the vehicle when the brakes are found to be out of order, also known as predictive braking.

3. Preventive measures.

Do not ignore the daily maintenance of the brake system, in order to prevent the occurrence of brake failure, please maintain the brake system in time, regular maintenance and overhaul is essential, for the safety of life, you must not ignore the regular maintenance.

Note: Check whether the brake shoes are in good condition, and do not overuse the brakes, hang the low gear when going downhill, use the brake of the engine to let the car drive, supplemented by the foot brake; Avoid severe overloading to prevent brake failure.

Check whether the suspension is loose or deformed, if not, the brake disc is uneven, and the front brake disc needs to be replaced.

Check the swing arm and brake disc.

Summary. The steering wheel does not shake when you don't step on the brakes, the steering wheel shakes when you press the brakes, check the swing arm ball joint of the chassis and the like, and the key point is the brake disc.

Hello, I have seen your inquiry, please wait for a moment and answer it for you immediately.

This situation is generally caused by the bad brake disc, the brake disc needs to be replaced, the brake disc is out of the park, and the brake resonance is transmitted to the steering wheel.

The brakes won't sound when you climb a hill, but you won't ring when you step on the brakes downhill.

Do you hit the brakes or shake the steering wheel?

Steering wheel. The steering wheel shakes when braking, which is caused by the deformation of the brake disc, as well as the loose chassis, check the ball joint of the chassis.

It's steering wheel shaking.

The steering wheel does not shake when you don't step on the brakes, the steering wheel shakes when you press the brakes, check the swing arm ball joint of the chassis and the like, and the key point is the brake disc.

There is time to shake, and there is time to shake and not to shake.

Has the chassis been checked, in this case, it is generally the chassis ball head is loose, and the brake disc is not good.

Not checked.

I have time to check the ball joint of the chassis, and the brake disc is caused by these reasons, and there will be no other reasons.

Here's why:

The fuel injector itself is faulty, the fuel injection is abnormal or the fuel injector is blocked, the fuel quality is problematic, the fuel moisture content is heavy, and there are many impurities, etc., resulting in abnormal throttle shaking. Throttle shake is caused by the following reasons: engine internal failure, improper internal maintenance, early or abnormal wear, cylinder pressure and other aspects of the fault or hidden danger and other reasons.

It is possible that the engine has a missing cylinder or a high-voltage line is out of flame, which leads to acceleration jitter. In addition, if the throttle is removed at this time, the shake will be reduced or disappear, and the speed of the vehicle will change according to the degree of damage to the faulty parts when the fault occurs. Firstly, check whether the left and right half shafts are bent, and secondly, disassemble and check whether the inner wall of the left and right inner ball cage is worn and produce pits, in most cases, the inner wall of the inner ball cage is in constant contact with the outer skin of the needle roller bearing, that is, the part that transmits torque, resulting in pits; Because when the vehicle accelerates rapidly, because there is a certain angle between the axial direction of the half shaft and the axial direction of the inner cage, the force point continues to reciprocate along the axial direction during the rotation of the cage, and the force generated by this change continuously pushes the body to the left and right, so it leads to the phenomenon of shaking.

If the gearbox is shaking, it is mostly because of the gearbox gear failure, half-shaft failure, and gearbox valve body problems, because the actual car cannot be seen, the fault can not be accurately judged, and it is necessary to contact the local 4S shop for inspection and maintenance.

If the gearbox is shaking, it is mostly because of the gearbox gear failure, half-shaft failure, and gearbox valve body problems, because the actual car cannot be seen, the fault can not be accurately judged, and it is necessary to contact the local 4S shop for inspection and maintenance.

When the gearbox reports CVT flutter, the basic vehicle will have shaking during driving, unstable engine speed, unstable power output, etc., at this time, to read the fault code will basically report the gearbox to report CVT flutter.

Solution: The vehicle warranty given by the Qashqai car manufacturer is three years or 100,000 kilometers, and the time and mileage are subject to the first arrival, so you can go to the 4S shop for free maintenance within this range. If you are out of insurance, you need to pay for it.

Nissan's cars, whether they are sedans or SUVs, are more fuel-efficient, because the minimum speed of the upshift is generally set at an ultra-low critical speed. Therefore, the engine will always be kept in the low speed range (the lower the engine speed, the more fuel-efficient in theory), at this time, the output torque power is insufficient and unstable, then the gearbox valve body will continue to adjust the gearbox speed ratio during driving, frequently and quickly increase the gear ratio to increase the engine speed to prevent stalling, reduce the gear ratio to reduce the engine speed to ensure fuel economy, always such a change, the solenoid valve and valve body that adjust the gear ratio are prone to failure. That's why the gearbox valve body is prone to problems.

If the steel chain is seriously worn, it has a certain relationship with the valve body, and it is also directly related to violent driving, after all, the characteristics of the CVT gearbox are like this.

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My 11-year-old Qashqai Lei, these days driving the car shaking, just like hanging on the high-end drag gear shaking, which god to tell me! My 11-year-old Qashqai ( Price |Detailed explanation of the model) Lei, driving the car in the past few days is shaking, just like hanging on the high-end stall to drag the gear, which god rents Lingshu to tell me! Is the throttle dirty?

Think about how long it has been since you have washed the throttle, if it has not been cleaned for more than 20,000 kilometers, you can consider washing it first. 1. The engine shakes more than normal when driving, and sometimes there is a problem that it cannot be started once. It may be that the throttle valve is too dirty, and the fuel injector and air intake tract have too much carbon deposit.

In the case of a cold car, carbon deposits will absorb a part of the fuel, and if the fuel is not completely burned in the cylinder, it will produce symptoms of unstable idle speed and difficulty in starting. 2. When driving at a certain speed at high speed, the steering wheel can feel obvious shaking or jumping, but it is not obvious at low speed. In fact, there are many problems that cause the shaking of the automobile engine, here we must first rule out the abnormal shaking caused by engine failure, because the failure of the engine generally occurs at low speed.

There are many reasons why the new Nissan hack is abnormal brake noise, such as:

The brake pads are too stiff.

b- The degree of wear of the brake pads has left the cage.

c- Excessive wear of the brake disc or brake hub.

D-Rust of the brake cylinder.

The killer line is broken.

f- The master cylinder for killing cars, etc., returns slowly.

2. Possible situations and treatments:

If it's a scream, the first thing to check is that the brake pads are running out (the alarm film makes a sound). If it is new, check the brake disc for foreign objects between the brake disc and the brake disc.

If it is stuffy, it is most likely a problem with the brake caliper, such as the wearing of the movable pin and the falling off of the spring plate.

If it's silk, then there are a lot of problems with Juedan. There may be problems with calipers, brake discs, and brake pads. If the noise persists, first check if there is braking resistance.

Poor caliper reset will cause the brake disc to rub against the brake disc for a long time, and under certain conditions, it will emit abnormal noise. Then check the disc for foreign objects between the disc and the disc. If it is a new membrane, it depends on whether the brake and mega disturbance disc are slotted, because local friction will produce abnormal noise.

If there is no problem with the brake disc, consider whether the brake pads are too stiff or if the muffler is not installed correctly.

Millions of car purchase subsidies.

Braking and steering are the two most important systems in the use of our vehicles, because they are directly related to our driving safety, and regular maintenance and inspection are very important to understand the condition of the vehicle. Many car owners report that the brakes are always abnormal. What is the reason?

Today we will talk about the main reasons for abnormal brake noise. 1.Abnormal noise after parking for a long time.

Due to the long parking time, the brake disc is easy to rust, and there will be abnormal noise when stepping on the brakes while driving. Generally, the abnormal noise is not so obvious after driving for a period of time, and it will be more powerful when braking.

2.Replace with new friction pads or brake discs. If the service technician does not chamfer the new friction pads or do not apply sound attenuating paste, it is easy to cause brake squeaks. However, after replacing the new brake disc, it cannot have a good run-in with the friction plate for the time being, and there will be abnormal noise.

3.Generally, when a hard foreign object enters the gap between the brake pad and the brake disc, the hard sand and gravel will run into the gap of the brake mechanism after wading through water or in the case of dirt road off-road. , and the braking system will jam when working, and there will be abnormal braking noise when running to the brake disc clearance.

4.It is common to loosen the brake mechanism, because the brake caliper is not tightened according to the specified torque during installation, the brake pad is not fixed well when driving brake, and the brake disc is not tightly matched, which will lead to abnormal noise.

5.ABS intervention in special cases usually occurs during emergency braking because the driver suddenly applies the brakes.

In order to avoid the phenomenon of wheel locking, the ABS system slightly loosens the brake mountain early car at the moment of locking, and re-clamps the brake disc, which can reduce the tail flicking, so the vehicle may have a short-term abnormal sound in the case of high-frequency locking unlocking.

6.Use low-quality brake pads. Inferior brake pads have a hard texture and a high metal content.

The friction between the hard brake pad and the hard brake disc is easy to produce abnormal noise, and it is easy to heat up after long-term braking. If the brakes don't work, it will cause the brakes to fail. It is recommended to replace the brake pads that have passed the quality standards.

7.When the friction pads are worn to the limit, usually when the friction pads are worn to a certain value (generally left and right), the vehicle system will send an alarm and recommend that the owner replace the brake pads. If you continue to use the metal plate that wears down to the brake pads, it will produce an abnormal noise.

Millions of car purchase subsidies.