Why does the car stall in neutral?
2 Answers
Stalling in neutral may be due to insufficient battery power in the car's ignition system. Replacing the battery with a new one can resolve this issue. Ignition System: If the ignition system malfunctions, the spark plugs may fail to ignite, preventing the air-fuel mixture from burning, which causes the vehicle to stall. In this case, it is necessary to check whether the ignition wiring is functioning properly, whether the ignition module is working correctly, and whether the spark plugs are damaged, such as broken electrodes or cracked ceramic parts. Fuel Injection System: The fuel injection system, also known as the fuel supply system, typically works by transferring fuel from the fuel tank through the fuel lines to the injectors, which then spray the fuel. If any component in this system, such as the fuel pump, fuel lines, or injectors, is damaged, the engine will not receive the necessary fuel, causing the vehicle to stall.
I experienced stalling in neutral when I first started learning to drive, which was quite annoying. A car suddenly stalling at a red light is usually due to unstable idling, such as a dirty throttle body or carbon buildup blocking airflow. If the idle air control valve is stuck or worn out and can't properly adjust the air intake, it's easy for the RPM to drop. Faulty throttle position sensors or mass airflow sensors may also send incorrect signals to the ECU, causing miscalculations in fuel injection. Issues with spark plugs or ignition coils can lead to inaccurate ignition timing, resulting in stalling at low RPMs. Insufficient fuel pressure from the fuel pump or a clogged fuel filter can also make it hard to maintain idle. Additionally, low battery voltage or unstable alternator output can interfere with the engine control unit's operation. I recommend regular maintenance, cleaning the throttle body, and checking related sensors to prevent sudden breakdowns and potential hazards. Stalling in neutral isn't just embarrassing—if it happens at an intersection, the consequences could be serious. Addressing the issue promptly is crucial.
