If when driving your car you notice that it stops when you slow down and stop, you should proceed to take preventive measures, such as parking in a safe place and seeking the support of a mechanic to do an immediate review. get to know why does my car turn off when i stop. If this fault occurs, it is recommended not to continue driving.
Reasons why my car turns off when I stop
Transmission malfunction
In a car with automatic transmissionthe torque converter performs the functions of the manual clutch and emits the necessary power. When the torque converter is bad or the transmission fluid level is low, the converter does not perform its function and the car does not have the ability to maintain power at low speeds, causing the engine to die. A solenoid TCS or damaged torque converter can cause these faults.
- We recommend you read: Automatic Transmission Failure Symptoms
Low fuel pressure, dirty or faulty fuel injectors, or failed fuel pump
The fuel pump It has the function of sending the gasoline from the tank to the engine. A broken fuel pump can cause low fuel pressure, which means poor fluid flow to the engine. While the car is going at high speeds this situation does not affect, however, at low speeds, a temporary stop in the flow of fuel is enough for the engine to die. Fuel injectors are parts responsible for sending an adequate amount of gasoline to ignite the spark plugs at a given time. The injectors can become clogged or dirty with use and time, not allowing the proper spray of fuel.
Faulty oxygen sensor or mass flow sensor
The oxygen sensors and the mass flow sensor are responsible for determining the amount of oxygen entering the fuel stream, and provide assistance to the car to adjust the air fuel ratio. In case there is too much or too little oxygen, the car does not develop the best power. The same goes for low fuel pressure, the car continues to run at normal speeds, however, with weak power it cannot power the car as it slows down.
Loose or corroded wires in the wiring harness
When there is a brittle ignition, it causes the engine to stop easily. If the wires don’t have a consistent, reliable, and correct connection to the ignition circuit, the car can lose voltage quickly, thus not developing the power needed to continue running as it slows down.
Faulty Idle Air Control Actuator
The idle air control actuator, is responsible for controlling the RPM of the engine when it is at idle. This part is called Electronic Control Unit (ECU) information so that it tells you which RPM maintain the engine for a smooth and safe idle. When the actuator is damaged, the engine does not receive the correct idle speed signal..
Clogged or faulty EGR valve
When the EGR valve is clogged, damaged or dirty, it can lead to the car stopping, idling wronglyeverything will depend on whether it is stuck, open or closed.
What should be done?
When a car behaves with any of these signs, it is best to seek the help of a skilled mechanic to review and diagnose faults and proceed to make the necessary repairs.
The specialist may require a test drive of the car to determine the problem, so you should replicate and listen to the engine at idle. For this you need to apply a scan tool to access the engine control unit or the transmission control computer to detect information about the stored codes. Depending on engine performance, test drive, and diagnostic information, the expert will determine the source of the fault in order to replace or clean parts.
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