The engine starts and stalls: possible causes and solutions to the problem

The operation of the car depends entirely on the operability of its components and parts. If one of the elements fails, the car stops functioning normally. With planned maintenance, all impending vehicle failures can be eliminated. However, it also happens that the failure of the part can happen suddenly. It happens that the car starts, then stalls. In many situations, it is not possible to get a vehicle behind and it is necessary to contact the services of a tow truck. What to do in this case and how to troubleshoot? Let's consider.

Causes of malfunction

If the car starts and stalls, the causes of the malfunction may be various:

• Long time of car operation.
• Problems in the electric circuit of the car.
• Faults in the fuel system of the vehicle.
• Incorrect adjustment of operation of some individual systems.

Glohnet idling

The reasons for stopping the power unit on the XX can be:

1. Malfunction of controller XX. Check the efficiency of the sensor XX can be as follows: try to start the car and when the starter is scrolled, press the gas pedal. As soon as the engine has started, it is necessary to release the pedal and see the speed, if they swim, the problem lies precisely in the sensor XX.
2. In other cases, when your VAZ (injector) is started and stalls, the problem lies in the violation of the throttle. Wash this part.
3. Sometimes flushing does not solve the problem. In this case, the reason lies in the throttle position sensor. To solve the problem, the sensor must be replaced.

Why the engine stalls

Starts up, on the run after that immediately stalls, the engine for a number of reasons:

1. Poor quality of fuel. The problem can be solved by replacing the fuel filter.
2. The spark plugs (big carbon deposits) were hammered. Exit - replacement or calcination of candles.
3. The clogged fuel cell. It is worth to make a replacement.
4. Air filter malfunction. The engine stalls due to insufficient oxygen supply, which leads to a weak combustion of the working mixture.
5. Generator failure or battery landing.
6. Failure of the main sensors of auto.

Generator problem

The main reason for stopping the engine at certain loads is a poorly working or not working voltage generator at all. When starting the engine, the energy is taken from the battery, and if the battery has sufficient charge, then notice the failure immediately fails. But after a little work, the battery will start discharging, because it does not receive the proper level of energy. As a result, the engine stops because of the small amount of energy. If the battery was initially weakly charged, it could happen that the injector starts and stalls.

Features of the malfunction

If there is a malfunction in the engine, the following characteristics will occur:

• The car stalls when you turn on devices or other equipment operating from an on-board network.
• The work of the BC is disrupted because of voltage drops.
• When the load is applied, the motor stops immediately.
• The sounds of the generator belt scrolling are heard.
• If the generator is broken, then when the speed increases, it starts to burn better and brighter.

Sometimes these problems are not related to the broken work of the generator, but to other problems of the car. To accurately determine the problem of a malfunction, it is better to use a diagnostic center where, thanks to the use of special equipment, the masters will be able to determine the problem of why the engine starts and stalls. In other cases, the engine stops immediately because of problems with other equipment.

Fuel sensor failure

Not the most reliable in the work are the float sensors of gasoline. Low reliability is also caused by poor quality of used fuel, climatic conditions. As a result, because of two unpleasant moments, the sensor breaks down. If the car owner produces each time refueling for one specific amount of fuel, then the sensor will fail in a fast time. The broken mechanism will not allow you to keep track of the end of the fuel in the tank in time, and if at the last moment there was enough fuel to start the engine, then a stop will occur, since there is not enough fuel to work. If there are problems with the amount of gasoline, as a rule, the engine will not be able to start the next time.

Emptiness of the tank

Sometimes, despite the performance of fuel sensors, the driver may not keep track of the amount of fuel in the tank. The first symptoms of a shortage of gasoline will be that the car's engine starts and stalls. In this case, you need to add some fuel and look at the behavior of the car. It is worth remembering that when trying to start the engine without the fuel in the fuel tank, the load on the gasoline pump increases. He warms up and works "on dry".

The grid of a gasoline pump was hammered

For cars of the VAZ family with the injector installed instead of the carburetor, it is characteristic that the car starts and stalls. Sometimes the reasons for self-stopping engine operation lie in the malfunction of the gasoline pump. If the car stalls right after the plant, but then starts, the problem lies in the clogged cleaning network of the gasoline pump. In this case, it is necessary to replace the grid with a new one and enjoy the further movement of the car. In other cases, it happens that the car is perfectly wound up on the cold and does not even stall, but as soon as it warms up or at hot temperatures in the street - it starts to twitch. What's the problem if the engine starts and stalls on the cold? It is hidden in the performance of the gasoline pump. Sometimes such signs are characteristic for poor quality of fuel. This is also caused by a clogged pump grid.

Fuel system malfunction

There are in addition to the clogged grid and other options for malfunctioning the fuel system, which affect the start-up and operation of the engine. All the following problems in the work of the driver can be solved by yourself or by contacting the service center:

• Burned petrol pump - the engine started and immediately died.
• The injector was clogged, which led to an insufficient amount of fuels and lubricants.
• Fuel pipelines were hammered because of poor-quality gasoline.
• Failure in the work of the on-board computer, which produced a cut-off of the gasoline pump.

Drivers of constantly serviced cars rarely meet with the listed faults of the fuel system. If the car starts up badly and stalls, the problem should be diagnosed precisely by checking the fuel system.

The valves are not working properly.

When the engine starts and stalls, the cause of the failure is hidden in the operation of the valves (this applies to the petrol engine model). Typical for diesel variants is the reduction in fuel pressure. For repair, you should contact the workshop, where they will carry out appropriate diagnostics and make adjustments to the valves and adjust the timing.

The most common problems can be:

• Uncontrolled valves and uneven gaps prevent the engine from operating stably.
• Deformation of the valve. A replacement will be required with subsequent adjustment of the timing.
• Undercooling of the power plant, which prevents to produce a normal warm-up at start-up.
• The diesel fuel was frozen in the pipes.

With the car, each of the listed breakages can occur, and it is possible to solve the problem only thanks to the corresponding masters. When the driver has the skill to adjust the timing, you can make repairs yourself. If malfunctions are observed in the winter, you should if possible put the car in a warm box for a while, and the problem of the plant / engine stop can disappear on its own.

The problem with the carburetor

There is a situation when the car is well warmed up, but there is an independent stop of the engine. Most likely, this is a carburetor fault. This is due to the fact that during its operation through the device passes a large amount of air, part of which allows you to cool in time. Together with the carburetor, the fuel is cooled, which passes through the device. As a result, it turns out that the temperature of the carburetor is much lower than the temperature of the engine. When the planned engine stop occurs, the carburetor begins to receive heat from the motor housing. Inside the floats of the chamber a reaction begins, in which the remains of gasoline evaporate. The evaporated parts begin to move freely and fill the carburettor, as a result of which air caps begin to appear in some places, and there is no fuel in the float chamber. To solve this problem, you need to press the gas pedal several times (it is only necessary to squeeze it half way). After that, start the engine. As a result of the measures taken, the air jams are removed, and the problem, when the engine starts and stalls, becomes exhausted. It is worth remembering that in addition to the carburetor, the problem can be manifested on a fuel pump or fuel lines. This phenomenon is observed at abnormally hot temperatures, when plugs appear in the system and pump, which leads to poor access to the carburetor. If the vehicle is regularly operated, it is recommended that the device be cleaned periodically with special solvents.

Conclusion

Qualitative equipment is famous for the duration of its work and high reliability, however, when operating any installations, problems occur. The situation, when the engine starts and stalls, can catch absolutely any driver. Often, this problem occurs with owners of budget brands. However, even cheap cars do not have such problems (with timely maintenance). And since trouble is always taken by surprise, it is better to conduct all the necessary activities prescribed by the MOT. So, we found out why the engine starts and stalls. As you can see, the problem can be solved independently, saving money on the services of the SRT.