The moment the car retreats into neutral before stopping, the car will shake, what is the reason?

If you notice significant body shaking when starting or stopping the vehicle without turning off the engine, it may mean that the vehicle has one of the following three conditions:

1.The engine has a lot of carbon deposits.

The most common cause of car shake is a dirty throttle or excessive carbon build-up in the fuel injector. When the carbon deposition inside the engine is excessive, the gasoline sprayed by the cold start fuel injector will be absorbed by the carbon deposition in large quantities, resulting in the mixture of cold start being too thin, making it difficult to start, in this case, only when the gasoline absorbed by carbon deposition is saturated, it is easy to get on the car, and the gasoline adsorbed on the carbon deposition after the car will be sucked into the cylinder by the vacuum suction of the engine for combustion, and the mixture becomes thick, and the combustible mixture of the engine is dilute and thick, causing idle shaking after cold start. The lower the temperature, the greater the amount of oil required for the cold start, and the more carbon deposits will affect the smooth cold start.

Solution: Clean the oil circuit and check whether the idle motor has carbon deposits and should be cleaned.

2.Problems with the ignition system.

Check the working condition of the spark plug, high-voltage wire and ignition coil, the ignition system is not working well, and the spark plug tripping condition is not good, which will also lead to this kind of failure.

Solution: Check whether the spark plug has too much carbon deposit, and replace the spark plug.

3.The oil pressure is unstable.

If you have cleaned the engine carbon deposit, washed the throttle, changed the oil pad and spark plug, etc., and still found that the body shakes when idling, it is recommended that you go to the 4S shop to check whether the fuel supply pressure and intake pressure sensor are normal, if the oil pump supply pressure is abnormal or the intake pressure sensor value is wrong and the work is not good, the body shake will be triggered.

Solution: Check the oil pressure and replace the parts if necessary.

4. Aging of engine parts.

Car jitter is also related to the aging of the engine feet (also known as claw pads). The engine foot is actually the suspension system of the engine, and the engine foot is responsible for absorbing the subtle shake of the engine when it is running, and if there is a problem with the engine foot, these vibrations will be transmitted to the steering wheel and cab, causing shaking when idling.

Workaround: Replace the parts.

The power is cut off, but the inertia is still there.

Analysis of the causes of car shake:

1. Cold start jitter.

First of all, starting from the cold start, the main reason for the cold start body shaking is that the fuel combustion is insufficient, resulting in insufficient power of the car. The ignition energy is low, and when starting, especially when the temperature of the fuel and lubricating oil is low, more oil is required to meet the power. It's been a long time, spark plugs.

The pole gap gradually increases, resulting in a decrease in ignition energy and poor fuel atomization, which causes the body to shake. In addition, the ignition coil.

Aging, spark plug high-voltage wires.

Aging or leakage can also lead to a decrease in ignition energy.

2. Suspension system problems.

Body shake is also related to the aging of the suspension system. It is mainly responsible for filtering out the shake of the engine when it is running, and if there is a problem with the suspension, these shocks are transmitted directly to the steering wheel.

Inside the cab, affecting driving. The engine is idling.

In this state, it is easy to cause shaking when the electrical system in the car is turned on. The engine will increase the load when the electrical appliances are turned on, causing the idle speed to drop, and to compensate for the jitter caused by the idle slip, the engine will automatically increase the speed by partially. So, when the electrical system, especially the air conditioner, is turned on, the engine will often shake.

This jitter is likely to be caused by the aging of the shock absorber and needs to be replaced in time.

3. Tire problems.

For tires, the tire must be balanced once when the car is replaced with new tires and new steel rims, otherwise the steering wheel will be prone to shake when the counterweight is uneven. If you find that the tire weight is not equal, you need to add lead to the inside of the rim to average the weight of the tires on both sides. Whether it is a general steel ring or a lightweight aluminum ring, it may deform or crack when subjected to a certain external force.

Rims. Deformation can cause shaking when driving, uneven weight of the rim can also cause shaking while driving, and incorrect angle of the rim can also cause shaking when driving.

4. Throttle problems.

The most common cause of car shake may be a dirty throttle valve and excessive carbon build-up in the fuel injector. After the car travels for a period of kilometers, the throttle valve will be too dirty to cause the throttle to close loosely or the idle motor to stagnate, resulting in the engine idling speed is too high, and the carbon deposits generated by the engine in this process will also cause the vehicle to shake, especially when starting the vehicle, the engine will shake more than normal, and even sometimes there will be a phenomenon that can not be started at one time. Therefore, when the body shakes, the first thing to do is to check the throttle and fuel injectors.

If you find that the throttle valve is too dirty or the fuel injector has too much carbon deposit, you should clean it with fuel injector cleaner or throttle cleaner in time.

5. The oil pressure is unstable.

If you still find that the body shakes after these are finished, it is recommended that you go to the repair shop to check whether the fuel supply pressure and intake pressure sensor are normal, if the oil pump supply pressure is not normal, the intake pressure sensor is wrong and improper work will cause the body to shake.

There is no load in neutral, which means that the jitter is not related to the transmission parts, but the engine is running unbalanced, which may be related to the ignition not being normal, and it is possible that a cylinder block does not burn or does not burn sufficiently.

The neutral shift jitter of the car may be: 1. Air intake system, air intake manifold or various valves leakage. Too much carbon deposits in the throttle or intake.

Idle actuator failure. Inaccurate air intake. 2. Fuel system, the injector is too dirty, the fuel pressure is faulty, and the fuel injection volume is inaccurate.

3. Ignition system, ignition line failure, spark plug failure.

The car's neutral gear means that the gearbox is not working and is idle, and the driving needs to be geared, so that the gearbox can travel at different speeds. Flameout means that the engine is not ignited, and the whole vehicle is in a non-working state.

The ultimate goal of coasting in neutral gear is nothing more than to save fuel, because the engine is generally more fuel-efficient when running at idle than at medium and high speeds. However, the control system of most EFI engines has the function of deceleration and fuel reduction or oil cut-off, for these EFI engines, it will no longer be necessary to use neutral coasting to carry out fuel-saving operations, if it is neutral coasting, it will be changed from "fuel saving" to "fuel consumption", which is very harmful to the car.

In order to facilitate the owner's driving and reduce the physical effort of the owner, the current car is generally equipped with steering assistance and brake assist devices to help the owner achieve steering and braking, but these devices need the engine to provide power to work. When the vehicle is turned off, the engine does not work, and the device without power will not work. Then there will be inflexible steering and braking.

There are several reasons for engine shake:

1. The engine has serious carbon deposits, and the most common car with serious shake is that the fuel injector throttle valve is too dirty or too much carbon;

2. Ignition system problems, check the working conditions of spark plugs, high-voltage wires and ignition coils;

3. The oil pressure is unstable, if the first pressure of the pump is abnormal or the error and poor work of the inlet pressure sensor will cause the body to shake;

4. Aging of engine parts. Excessive carbon deposits in engine emissions absorb carbon from the gasoline of the cold-start injector, which leads to a dilute cold-start mixture and difficulty starting.

Specific solutions to idle jitter:

1. The engine has serious carbon deposits. The most common cause of idle judder is excessive carbon build-up on the throttle or injector. When there is too much carbon deposit inside the engine, the gasoline sprayed by the fuel injector during cold start will be absorbed by the carbon deposit, resulting in a mixture that is too thin and making it difficult to start.

After landing, the gasoline adsorbed on the carbon deposits will be sucked into the cylinder by the engine and burned, which will thicken the mixture. The mixture is sometimes dilute and sometimes thick, which will cause idle jitter after cold start. The lower the temperature, the greater the amount of oil required for cold starting, and the more carbon deposits will affect cold starting.

The solution is to clean the carbon deposits at the throttle and injector.

2. Poor ignition system and poor ignition of spark plugs will also lead to engine idling and shaking. If there is a problem, check whether there is a fault in the ignition tether system and whether the spark plug has too much carbon.

3. The oil pressure is unstable. If you have cleaned the carbon deposits in the engine, cleaned the throttle valve or replaced the spark plug, and there is still the problem of body shaking when idling, it is recommended to go to the 4S shop to check whether the fuel supply pressure and intake pressure sensor are normal. If the oil pump supply pressure is not normal or the intake pressure sensor is incorrect, it can also cause the body to shake when idling.

4. The best way is to clean the oil circuit, clean it regularly, there is no specific experience in the research and development parameters of the clean engine from the beginning of the new car, coupled with the continuous improvement of emission standards, can not adapt to the change of fuel, all manufacturers of the engine are unable to solve this jitter problem in the short term, plus the fuel quality is not very good or the initial fuel of the new car is stored for too long, resulting in a rapid increase in the colloidal composition of the oil circuit, which will continue to pollute the fresh fuel and lead to no good fuel can participate in combustion in the later stage. The occurrence of excessive carbon deposits is especially common for China VI vehicles. We can only gradually alleviate most of the problems by maintaining clean oil circuits. The use of PNF dope fuel additives can solve the problems caused by carbon deposition.

It may be that there are some faults in the engine of the car god, or it may be that the stability of the car is not good, or it may be that there is a problem with the wheel of the car of You Yunian, or it may be that the car's body is shaking.

It may be caused by dirty throttle valves, too much carbon accumulation in the injectors, or poor vacuum absorption of the engine.

This may be due to the fact that the injector has too much low carbon, so it will cause the in-place shaking during neutral shift.

It is because I stepped on the accelerator when I was in place, and secondly, because there was a certain problem with the engine, so it caused such an impact.

The main reason is that you are still stepping on the accelerator when you are in neutral, and it is also because there is a certain problem with the car's engine, so it will lead.

The reasons for the severe in-situ shaking of the car neutral are: excessive carbon deposition on the throttle or intake valve of the intake system, too dirty fuel injector in the fuel system, ignition system, ignition line failure, and spark plug failure will cause the car to shake in neutral.

It is very likely that this is caused by a serious carbon deposit, which is particularly severe, and it may also be caused by a problem with the acceleration ability.

It is likely that the engine is missing cylinders or several other cylinders are running poorly, which causes the engine to work unsmoothly, so there is shaking.

It could be that there is some problem with the air intake system, or there may be some problem with the fuel system, or there may be some problem with the ignition system, which should be overhauled.

What should I do if the automatic gear shakes? Don't be in a hurry to go to the 4S shop to repair, the old driver will teach you a trick to solve it easily.

The oil circuit problem is generally caused by the blockage of the oil circuit, resulting in poor oil supply, which is manifested as engine shaking, unstable standby speed, and stalling during driving; In addition, engine shake will also occur when the oil pump fails, and the oil pump problem should be judged by disconnecting the oil pipe and checking the flow rate and flow rate.

Check whether the right fit is accurate, and generally the abnormal ignition is the right fit problem; Check whether the spark plug has aged, whether the gap is the same, and whether the gap has changed; In addition, if the distributor does not work properly, it will also cause the engine to shake.

Neutral jitter, you can try to step on the clutch to see if it shakes, since you are a manual transmission. If it's still shaking, it's engine idle jitter. The throttle and spark plug are the most suspicious.

What is the reason why the automatic transmission correction car suddenly shook when it hung neutral gear when parking?

There are many reasons for car shaking, you can check them one by one:

1. Air intake system. zhi

1. Intake manifold or various valves leak DAO gas.

2. Too much carbon deposition in the throttle or inlet tract.

3. Failure of idle actuator.

4. The air intake is inaccurate.

Second, the fuel system.

1. The injector is too dirty.

2. Fuel pressure failure.

3. The amount of fuel injected is inaccurate.

3. Ignition system.

1. Ignition line failure.

2. Spark plug failure.

There are many reasons for car shaking, you can check them one by one:

1. Air intake system.

1. Air leakage from the intake manifold or various valves.

2. Too much carbon deposition in the throttle or inlet tract.

3. Failure of idle actuator.

4. The air intake is inaccurate.

Second, the fuel system.

1. The injector is too dirty.

2. Fuel pressure failure.

3. The amount of fuel injected is inaccurate.

3. Ignition system.

1. Ignition line failure.

2. Spark plug failure.

If the car shakes in neutral, it may be caused by problems with the engine intake system, ignition system, and fuel supply system.

There are many reasons why an engine shuttles and closes. If the spark plug does not work well, there may be jitter. After the spark plug is used for a long time, the electrode gap will become larger, and there will be carbon deposits on the spark plug, and the spark plug needs to be replaced.

If the oil pressure is unstable, the engine will shake and the acceleration will be uneven. Unstable oil pressure can be caused by problems with the injector or high-pressure oil pump.

Or too much carbon deposits at the throttle intake, and the engine will shake abnormally. If the air intake system leaks, the engine will also shake.

If the motor jitter is abnormal, it is recommended that all riders go to a 4S shop and have a professional maintenance technician read the fault with a diagnostic computer**, so that we can know which part is faulty.

If there is an air leak in the air intake system, then it is necessary to find the leak point. Air intake system leaks are troublesome to repair.

It is recommended that riders do not add low-quality gasoline when using the bike, which will lead to increased carbon deposits in the engine. If you're a motorist with an in-cylinder direct injection engine, it's recommended to clean up the carbon deposits every 20,000 km. The most effective way to clean up carbon deposits is the walnut sand cleaning method.