Why Does an Automatic Transmission Car Stall?

[LoganMarie]

Here are the reasons why an automatic transmission car stalls: 1. Electrical circuit failure, which may occur during driving due to low-voltage power failure or quenching. At this time, you can mainly check the ignition switch and starter switch, as well as the fuse box. Stalling caused by a short circuit in the low-voltage circuit results in intermittent stalling. Check the vehicle's low-voltage circuit; 2. Equipment failure, this issue is generally caused by faults in the ignition coil, capacitor, or electronic ignition module. The car starts initially but stalls after a while, then can be restarted, only to stall again; 3. Fuel system failure: damage to the fuel pump, pipe rupture, carburetor inlet blockage, or an empty fuel tank. In this case, the car can be restarted but with difficulty. Problems with the ignition system or engine overheating and anti-knock system can also cause stalling.

[SanBennett]

I once stalled an automatic car because I forgot to refuel and ignored the fuel warning light. Halfway through my drive, the engine suddenly stalled, which gave me quite a scare. I learned my lesson and now always check the fuel level before driving. Besides running out of fuel, stalling can also be caused by ignition system issues, such as worn-out spark plugs or faulty ignition coils, preventing proper fuel combustion. Other common causes include a clogged air filter, sensor malfunctions like a bad oxygen sensor, or a weak battery. Safety first—if your car stalls, immediately turn on the hazard lights and pull over. Avoid forcing a restart to prevent engine damage. Regular maintenance is recommended, including replacing worn parts and keeping the fuel and electrical systems clean.

[OKeira]

I've experienced automatic transmission cars stalling, and the most common cause is engine issues. Once, my car stalled while driving, and it turned out to be a faulty fuel pump that interrupted gasoline supply. Additionally, sensor failures, such as a broken crankshaft position sensor, can mislead the control unit and cause stalling. There's also the idle control system; if the valve is clogged or the motor is stuck, unstable idling can lead to stalling. Don't forget transmission problems—confused shifting logic might also trigger stalling. It's advisable to first check the oil level and whether the battery terminals are loose, then take the car to a repair shop to scan for trouble codes with a diagnostic computer for targeted solutions.