This article will explain why the car stalls on the go. The reason for this phenomenon may be the most commonplace, but you will get a lot of troubles from this "behavior" of the car. In addition, the engine may stall at idle. This is not pleasant enough, the engine seems to start, but after a while it stops working. A variant is possible in which the engine does not want to start if its temperature is close to the working one. The engine operating temperature is about 90 degrees. And there may be many reasons, but you need to consider the main ones.
Most common reason
It is worth paying attention to the fact that all the reasons can be divided into several categories. Why does the car stall on the go? The reason can be either banal or complex. If we are talking about injection engines, then very often the regulator fails, which is responsible for idle speed. It is he who supplies the necessary amount of air to the fuel rail. The idle speed regulator is a stepping electric motor, with its help, the channel opens and closes, through which clean air passes into the ramp for mixture formation. So, first of all, you need to make sure the idle speed regulator is working. To do this, it is necessary to scroll the crankshaft with a starter, at the same time squeeze the gas pedal. The motor starts up, but the number of revolutions is constantly changing. There is a failure of the IAC - the motor stalls when you press the gas. And the most effective way to get rid of such trouble is to completely replace the element. You need to install a new idle speed control. On VAZ cars, this is done literally in a matter of minutes.
Throttle problems
Quite often, the reason that the engine starts to stall is the throttle itself. It is possible that the air filter is worn out, so inside the entire surface of the damper was contaminated. To correct this damage, it is enough to clean the damper completely from the inside. Please note that after a thorough cleaning, the problem may persist, anyway the engine stalls when you press the gas. In this case, make sure that the position sensor is in good condition. This sensor is a variable resistor. It is mounted on the axis of the damper. Moreover, the maximum wear is observed in the extreme position (corresponding to idle speed). If it fails, then it is necessary to completely replace it. The cost of the part is quite low, and the replacement takes place in just a few minutes. But it is possible that the motor begins to stall, despite the fact that all the sensors are in perfect condition.
Fuel quality
Always keep an eye on how much gas you refuel your car. In most cases, all of the above symptoms occur when you refuel the tank. Of course, the motor may stall after some time. Therefore, it will be difficult to determine the breakdown immediately. It is also worth paying attention to: the reason that the engine starts to troit, stall, should always be looked for in gasoline itself. To cure such a "disease", you will need to completely drain the gasoline from the tank, and also replace the fuel filter. Unfortunately, at gas stations you do not always buy high-quality fuel. Therefore, it is worth choosing one brand of the manufacturer that sells the highest quality gasoline. Of course, there are times when a car stalls on the go (the reason for this is not gasoline). Please note that excessively low cost is the first sign that gasoline is of dubious origin. And pouring it into the tank - this is equivalent to sending the car at full speed into the pole.
Spark plug
To make sure the spark plugs are working , you need to unscrew them all, check the clearance, as well as the presence of soot. And your car stalls on the go. The reason may be hiding in the candlelight. In the event that there is a strong deposit, but the gap is within acceptable values, it is necessary to clean the electrodes of the candles. But the best way out is to install new candles. In the same case, if the gap is very large, there is excessive electrode wear, cleaning will not help, it is necessary to completely replace the set of candles.
Fuel filter
And here is another very common reason that the car stalls on the go. VAZ or a foreign car - it does not matter. But this is especially true for older cars. Some drivers simply forget that the car has a filter for cleaning gasoline. It is located at the bottom of the fuel pump. Of course, in the presence of dirt in the filter, gasoline will not enter the fuel rail and the combustion chamber will simply not. There will certainly be interruptions in the supply of fuel. In this case, by pressing the gas pedal, turn off the engine. To get rid of this malfunction, it is necessary to remove the gas pump, replace the filter. It is also worth considering that the tank itself can cause a clogging of the filter soon. Therefore, either tank replacement or thorough cleaning can help.
Air filter
A similar situation, as in the case of a gasoline filter element. Please note that the operation and repair of the vehicle must be carried out in accordance with the requirements of the manufacturer. After all, you know that a mixture of gasoline and air is fed into the combustion chamber. Therefore, if some component of this mixture does not enter the fuel rail, the engine will stall. Consider an example of how the engine works when there is a lack of air. A too rich mixture enters the combustion chamber , as a result of which candles are poured. In this case, there is a feeling that the engine does not have enough air, it suffocates. Among other things, some motorists who are not aware of the principle of operation of the internal combustion engine may cover the inlet pipe with a rag to prevent water from entering it. Funny, but it happens.
Fuel pump
If the fuel pump does not work, then, of course, the car stalls. In this case, the carburetor will work perfectly, but no one gives it gasoline. On injection vehicles, the fuel pump is located under the rear seat. On carburetor - near the camshaft (as it has a drive from it). If it stops working, then the engine can idle normally, but with an increase in speed, it will stall necessarily. However, when the gasoline pump is completely worn out, the engine will not start at all. To get rid of this malfunction, you must either repair the pump or replace it completely, which is most effective. As for carburetor motors, the pump diaphragm drive rod can wear out very much in them.
Electrical equipment
The problem of stopping the motor can also be a malfunction of electrical equipment. In particular, oxidation may occur at the terminals of the battery. Although old cars, even new ones, all need maintenance and careful care. Therefore, the contact worsens, as the resistance increases, and this leads to the fact that the engine stalls. The battery itself may also fail. In the same case, if the generator does not provide the necessary current, the entire electric network of the car goes to power from the battery. If you did not immediately see a burning lamp, indicating that there is no charge, the car will continue to move. Given that the light will be turned on and the ignition system is working, after some time the battery will completely discharge and the engine will stop. You will have to charge the battery, as well as completely repair the generator.