What causes a car to start and then stall quickly?

[CaliAnn]

The reasons why a car starts and then stalls quickly are: 1. Use of unqualified fuel; 2. Blocked fuel lines; 3. Faulty spark plugs; 4. Abnormalities in the fuel injector or fuel filter; 5. Poor contact in wiring connectors; 6. Insufficient driving skills; 7. Short circuit or power failure in the engine or car computer; 8. Releasing the clutch too quickly when starting or going uphill; 9. Low oil pressure from the fuel pump; 10. Poor operation of the idle control system. The solutions for a car that starts and then stalls quickly are: 1. Clean the throttle body, intake tract, and fuel injector; 2. Inspect and repair the ignition coil; 3. Add fuel; 4. Check the fuel pressure regulator and fuel lines.

[LucasLynn]

I've encountered this issue a few times in my ten years of driving. The engine stalling immediately after ignition is indeed frustrating. The most common cause is a problem with the fuel delivery system, such as an aging fuel pump failing to supply fuel continuously or a clogged filter obstructing smooth fuel flow, causing the engine to stall due to fuel shortage right after starting. Another frequent issue lies in the ignition system, like dirty spark plugs or faulty ignition coils, resulting in weak or no spark. Problems in the air system, such as a severely clogged air filter or a stuck idle control valve, can lead to insufficient air intake and unstable idling, making the engine prone to stalling. Faulty sensors like the crankshaft position sensor or mass airflow sensor can also mislead the engine control module. Additionally, low battery voltage or loose connections might cause a momentary power loss after starting. In such cases, I recommend first checking basic components, like whether the battery terminals are loose, or gently pressing the accelerator to see if the RPM can be maintained. Avoid repeatedly forcing the engine to start to prevent damaging other components, and seek professional diagnosis at a repair shop as soon as possible for safety.

[VonFinn]

As a novice driver who just got my license, I was quite frightened when my car stalled shortly after starting. The main causes often lie in simple areas: fuel system issues like a faulty fuel pump failing to deliver gasoline, or ignition problems such as worn-out spark plugs causing poor ignition. Sometimes, a clogged air filter obstructs the airflow system, leading to a lean air-fuel mixture and unstable idle that results in stalling. Failed sensors like an oxygen sensor can cause the engine to miscalculate fuel injection frequently. Additionally, an aging battery with a sudden voltage drop can also trigger this issue. Simple troubleshooting steps include opening the engine compartment to check for loose wiring or gently pressing the accelerator to attempt restarting a few times—but avoid prolonged attempts to prevent draining the battery. Regular maintenance, such as timely oil and filter changes, can help reduce such troubles. If this happens frequently, visit a repair shop promptly to avoid the danger of breaking down on the road.

[LeKaden]

I usually enjoy studying automotive principles, and the issue of stalling after ignition may involve multiple systems. A malfunctioning fuel pump or fuel injector causing interrupted fuel supply can trigger this condition; in terms of ignition, severe carbon buildup on spark plugs or burnt-out coils can prevent sustained ignition; in the air system, a stuck idle control valve can obstruct air intake; critical sensors like a failed crankshaft position sensor can cause the ECU to lose synchronization in controlling the engine. The ECU itself may also malfunction due to program errors or short circuits from moisture. Preliminary diagnosis can be done using an OBD tool to read fault codes and identify the root cause. It's recommended to lightly press the accelerator temporarily to assist starting and seek professional repair for safety.