What causes a car to stop suddenly while moving?
Here are 12 common reasons why your car might suddenly stop while driving.
1. Out of gas
Always check your fuel level before you set off. This can save you a lot of time and potentially negative situations. If your car shuts down when the fuel tank is full or at a reasonable level, your fuel gauge may be faulty.
2. Battery problem
The battery in your car helps your car start, it also helps run the electronics in your car, such as the windows, doors, and spark plugs. If the battery fails or runs out of power, your car can suddenly stop while you're driving. So, it's worth keeping in mind how long your car battery will last, as they typically only last about 3 years.
3. Generator problem
The alternator charges the battery and provides additional electrical power to the vehicle's electrical system. If there is a problem with the alternator in your vehicle, your vehicle may also stop suddenly, creating a potentially dangerous situation.
4. Wrong fuel
Be careful what type of fuel you put in your car. Putting the wrong type of fuel in your car will damage your engine and you won't be able to start it again.
5. Pressure regulator failure
The pressure regulator is responsible for maintaining a stable fuel pressure in the distributors. When the pressure reducing valve fails, the fuel pressure will change (pressure is too low or too high).
This will directly affect engine capacity and is also the cause of sudden engine failure.
When the pressure regulator valve is damaged, the engine will lose power, accelerate poorly, smoke black and consume more fuel... The way to handle a damaged pressure regulator valve is to replace the pressure regulator valve as soon as possible to avoid further damage and ensure safety when using the vehicle.
6. Clogged fuel filter
The fuel filter is responsible for preventing dirt and impurities from entering the fuel before it enters the engine. After a long period of operation, the fuel filter becomes too dirty, causing the fuel to not flow properly into the engine. This causes the vehicle to suddenly stop while rolling.
When the fuel filter is clogged, the car will have certain symptoms that you can recognize such as: the engine heats up quickly, the car is sluggish, and fuel consumption is faster than before. If this situation is not resolved quickly, the engine will become weaker and weaker and eventually die when pressing the accelerator pedal hard.
It is difficult for car owners to determine the exact cause. Therefore, the best way is to take your car to the garage to check and replace the fuel filter.
7. Clogged fuel injector
The injector is responsible for spraying fuel into the combustion chamber so that the air-fuel mixture can be burned. After a long period of operation, dirt will stick to the injector. If it is not cleaned for a long time, it will lead to clogging.
When the injector is clogged, the amount of fuel entering the combustion chamber is not enough. As a result, the speed, size and timing of fuel injection will not be accurate. This affects the fuel combustion process.
The most obvious sign of this error is when accelerating, the engine runs weakly or the car suddenly dies. Take the car to an auto repair center to clean the injector. If the injector is too dirty, the injector must be replaced.
8. Cooling system failure
One of the reasons why the car suddenly stalls may be due to a problem with the cooling system. The cause may be due to a lack of coolant. In addition, when the condenser has the following errors, it will also lead to similar phenomena such as: Broken water pump, clogged radiator, broken fan, leaking pipes, broken welds, broken thermostat valve...
When your car's cooling system fails, the most common sign is a rapid increase in engine temperature, which you can tell by looking at the temperature gauge. At the same time, the engine will run less efficiently and make strange knocking noises.
This is a very serious problem that needs to be solved as soon as possible. Otherwise, the engine surface will be deformed, and more seriously, it will cause the car to stall, and eventually the car will suddenly stall.
If you notice a rapid increase in engine temperature, stop and park the car in a cool, safe place. Then, turn off all electrical devices in the car such as the air conditioner, wait for the engine to cool down, then open the hood to check. If you notice that the coolant is empty, refill it. Then take the car to a car repair garage for a specific inspection.
9. Idle valve failure
The vacuum valve plays a role in adjusting the cross-section of the air passage depending on the engine's operating mechanism. When the idle valve is clogged with dirt, it affects the engine's idle mode.
When the exhaust valve is faulty, when the vehicle is idling, the engine is showing signs of roughness, the vehicle is accelerating or when the engine is idling, the engine suddenly stops. In this case, clean the idle valve or replace it if necessary.
10. Faulty ignition coil or spark plug
For the combustion process in the combustion chamber to take place, three factors must be respected: fuel, air and spark.
The spark will be created by the ignition system. The ignition system on a car consists of two main parts: the ignition coil and the spark plug. If one of these two parts fails to ignite, or the spark is weak, or the ignition timing is incorrect. This will affect the combustion process of the air-fuel mixture, causing the car to stall.
When the ignition coil or spark plug on the car has a problem, the car engine will show some of the following signs: Weak engine, vibration, difficult to start, engine does not start, vibration, Check Bright engine error light... Therefore, it is necessary to check and clean the entire ignition system. If the spark plug is damaged, it must be replaced.
11. Oil problem
Using poor quality oil, expired oil, lack of oil… will affect the ability to lubricate the parts inside the engine. Therefore, it causes the engine to overheat quickly and cause the vehicle to suddenly die.
In addition to its lubricating properties, engine oil also has a cooling function. If the vehicle runs out of oil or the oil deteriorates, the internal parts of the engine will not be cooled effectively, causing the engine temperature to increase.
When the engine temperature is high, the engine oil pressure warning light on the instrument cluster will come on. If the vehicle is low on oil, it is necessary to add more oil. If the oil is degraded, the old oil must be drained and replaced with new oil.
12. High pressure pump/fuel pump failure
The car's high-pressure pump is responsible for pumping fuel into the combustion chamber through the injector, to carry out the fuel combustion process. Thus, if the high-pressure pump is damaged, the combustion process will not take place normally. This error is also one of the errors that can cause the car to stall in the middle of the road during operation.
The fuel pump is usually located inside the fuel tank, making it difficult to detect. But if the pump gets hot or is not working properly, the engine will become hotter and noisier than usual.
It should be checked and repaired as soon as possible. If the pump is severely damaged, replace it with a new one.
