What Causes a Car to Stall Suddenly After Starting?

[Alexandra]

There are several reasons why a car may stall shortly after starting, including severe engine carbon buildup, issues with the car's anti-theft system, ignition switch failure, or low fuel system pressure. Here are the details: 1. Severe engine carbon buildup: When there is excessive carbon buildup in the engine, fuel cannot burn effectively in the cylinders, leading to stalling after starting. In this case, the engine carbon needs to be cleaned promptly. 2. Activation of the anti-theft system: If the car's anti-theft system is triggered, the engine may start but fail to operate normally, causing the car to stall after starting. This issue commonly occurs after replacing the car key or its battery, so it's essential to reprogram the key after such changes. 3. Ignition switch failure: A faulty ignition switch can cause the car to stall after starting and trigger the malfunction indicator light. This is a complex issue that requires professional inspection and repair at a car service center or 4S shop. 4. Low fuel system pressure: Insufficient fuel system pressure prevents effective fuel combustion, necessitating a thorough inspection of the fuel system.