What s the reason why my car tends to stall when coasting in neutral?

The idle speed is too low, check the condition of the idle motor.

The main reasons for the general car stalling:

1. Use low-quality fuel. Once the automatic car stalls, the main reason is the use of inferior (not up to standard) fuel, which in turn causes the engine to depot and stall.

2. Engine computer failure. From the point of view of kilometers, after using the car for a long time, the possibility of engine computer failure will be relatively large, once the engine computer fails, it will cause the car to stall, which is a problem of control. Just like the human brain, when there is a malfunction, the body "goes out".

3. The driving skills are not proficient enough. The driver's unskilled driving skills and improper operation will also cause the car to stall.

4. Multiple cylinder failures at the same time. It is possible that due to the failure of the spark plug or the high-pressure bag, one or more cylinders will not ignite, resulting in a flameout. However, only the failure of multiple cylinders at the same time and non-ignition can cause flameout, so there is such a possibility, but the probability is not large.

5. The engine itself fails. Damage to the engine idle motor or the wiring of the idle motor, or a problem with the idle control module in the engine's electronic control unit (ECU). The possibility of the engine itself failing is extremely high among the many reasons why a car stalls.

6. Oil pump failure. The stuck oil pump or the failure of the oil pump itself will cause a sudden lack of oil supply, and no oil supply will easily cause the car to stall.

The reasons for hanging neutral gear and turning off the ignition are as follows: 1. Low idle speed: It is generally caused by too low idle speed, so it depends on how much idle speed is, and if it is too low, it must be adjusted back.

2. Throttle: If it is not an idle problem, it may be caused by excessive carbon deposition in the throttle, idle motor, intake valve, intake pipe, combustion chamber, spark plug, fuel injector and other parts. 3. Fuel injector:

It is also necessary to pay attention to check whether the fuel injector is leaking, resulting in the fuel injector being in the state of oil supply after the throttle, resulting in the mixture being too thick when driving at low speeds, resulting in unstable idle speed after oil resuming, and in serious cases, it will lead to stalling.

It may be caused by excessive carbon deposition in parts such as throttle valves, idle motors, intake valves, intake pipes and combustion chambers, spark plugs, fuel injectors, etc. These carbon deposits can clog the idle channel, causing the idle motor to clog or go beyond its adjustment range, resulting in reduced idling, unstable idling, and turning off the lights when collecting oil. Pay attention to whether the injector is leaking.

The pressure of the gasoline pump is insufficient or the oil circuit is not smooth; 2. Neutral gear generally refers to the state that the automobile gear lever cannot enter the forward or backward gear, and the hole grinding transmission and the driving wheel are completely separated. The manual neutral is in the middle position, but the automatic neutral is'n'markers; 3. In the driving of the car, the driver puts the gear lever in the neutral position, separates the engine and the driving wheel clutch, and uses the operation method of vehicle inertia. Neutral coasting must be carried out under the premise of ensuring safety and the technical condition of the vehicle, and no fire extinguishing coasting is allowed.

Especially when descending steep slopes and long slopes, do not turn off the engine or slide in neutral.

Reasons for neutral coasting and stalling: 1. The throttle or idle motor is dirty, the pressure of the gasoline pump is insufficient or the oil circuit is not smooth; 2. Neutral gear usually refers to the state that the motor vehicle gear lever is not put into any forward or backward gear, and the gearbox and the driving wheel are completely separated. The neutral of the manual transmission is in the middle position, while the neutral of the automatic transmission is"n\"Respect for the Limbs; 3. In the driving of the motor vehicle, the driver puts the gear lever in the neutral position, separates the clutch of the engine from the driving wheel, and uses the operation method of the inertia of the vehicle, the neutral slide must be carried out under the condition of ensuring safety and normal technical condition of the vehicle, and it is not allowed to turn off the fire and slide, especially when going down a steep slope or a long slope, it is not allowed to turn off the engine or slide in neutral.

1. The valve or idle motor of the throttle is dirty, the pressure of the gasoline pump is insufficient or the oil circuit is not smooth;

2. Neutral gear usually refers to the state that the motor vehicle gear lever is not put into any forward or backward gear, and the gearbox and the driving wheel are completely separated. The neutral of the manual transmission is in the middle position, while the neutral of the automatic transmission is the n marker;

3. In the driving of the motor vehicle, the driver puts the gear lever in the neutral position, separates the clutch of the engine from the driving wheel, and uses the operation method of vehicle inertia driving, the neutral slide must be carried out under the condition of ensuring safety and normal technical condition of the vehicle, and it is not allowed to turn off the fire and slide, especially when going down a steep slope or a long slope, it is not allowed to turn off the engine or slide in neutral.

If the throttle sticks or does not return due to throttle contamination, it is recommended to clean the throttle and match the throttle. Ignition system ignition failure or leakage may occur. The main reason is that the spark plug gap is large, and the ignition coil line is unstable driving.

Usually, the car can shine and stop the vehicle without opening the shift position, without applying the brakes and not pressing the clutch. Brakes need to be assisted by engine vacuum. The coasting engine in neutral is just idling.

If the vacuum generated when the brake is suddenly applied to start the machine, the engine will stop. I recommend not coasting in neutral. Neutral slippage refers to:

1. In the car driving, the driver puts the gear lever in the neutral position, dissociates the clutch of the engine and the driving wheel, and uses the operator of the vehicle inertia to drive the stuffy liquid method. 2. Neutral coasting must be carried out under the premise of ensuring safety and normal technical condition of the vehicle, and sliding must not be turned off. Especially when descending steep slopes and long slopes, do not turn off the engine or slide in neutral.

3. If the traditional carburetor car slips in neutral, the fuel consumption may be increased, and the effect is better after the speed is reduced. The injected oil is mechanically controlled, so idling is equivalent to stepping on the first step of throttle. After removing the drive system in neutral, the idle fuel consumption can only be fixed, and the throttle may need to be replenished without dismantling.

Otherwise, the speed gear may not be adjusted sufficiently and the engine may stall.

It is very dangerous to turn off the ignition in neutral gear: 1. Neutral coasting has always been a more fuel-efficient operation, especially for the vast majority of truck drivers, who often use the ignition and neutral sliding to save fuel. However, for the current EFI-powered anti-suspect machine car, the neutral sliding operation must be used cautiously, and the ignition and neutral sliding cannot be used; 2. The ultimate purpose of neutral coasting is to save fuel, of course, it is certain that the engine is generally more fuel-efficient than running at medium and high speeds.

However, the control system of most EFI engines has the function of deceleration or fuel cut-off, for these EFI engines, it will no longer be necessary to use neutral coasting to carry out fuel-saving operations. 3. In fact, we have always advocated that we should not slide in neutral gear, and the main reason is for driving safety.

Idling off is very dangerous: Idling has long been widely regarded as a more fuel-efficient operation, especially since the vast majority of truck drivers often use idling to save fuel. But for the current EFI engine car, neutral coasting operations must be used with caution, while stalling and neutral coasting cannot be used; The ultimate goal of coasting in neutral gear is nothing more than to save fuel, and of course it is certain that 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 or fuel cut-off, for these EFI engines, it is no longer necessary to use the empty sparrow to coast slowly to save fuel, if the neutral gear coasting, on the contrary"Draw snakes to add to it"，"Fuel efficient"became"Come on"；In fact, we have always advocated that everyone should not coast in neutral, the main reason is to talk about safety while driving.

<> the clearance of a series of gliding carburetor cars is likely to save fuel, and it is effective when the speed is very low, because it is mechanically controlled fuel injection, idle is equivalent to the initial section of the throttle and then the gap between the drive line, just a fixed idle fuel consumption, do not leave, may have to make up the throttle, otherwise the speed gear is not coordinated may shake the ignition of the current EFI car, the amount of fuel injection is controlled by the computer, according to the sensor in the engine works automatically, the idle speed of the EFI car is not adjustable. In this way, the engine will use inertia to maintain its operation while idling instead of gearing, and will cut off the fuel**. The result is fuel economy, but high sliding resistance, short distances, and less braking at the back.

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Gently hold the steering wheel with your hands, hit the square at a small angle, and let the car slide for a while and then slowly stop. Gently press the brake pedal with your foot and press the brake cover slowly and continuously to ensure that the vehicle comes to a quick stop. Use your foot to press the clutch and brake at the same time.

Should be stupid and should immediately find a nuclear-safe area to park, be sure to avoid coasting in neutral gear. This is very dangerous, so you should turn off the engine immediately and pull over, which is the most appropriate practice.

You can park the vehicle on the side of the road and then restart it so that you can keep the vehicle running normally and avoid such a state.

Immediately apply the brakes, slow down the car, and then press the clutch to engage the first gear, and the car can maintain a relatively stable state.