What are the reasons for the car stalling immediately after starting?

[VonOwen]

Reasons for the car stalling immediately after starting: 1. Carbon deposits: During cold starts, the engine temperature is low, and fuel is difficult to evaporate or vaporize. If there is severe carbon buildup in the fuel lines or intake manifold, it can lead to an overly lean air-fuel mixture entering the combustion chamber, resulting in unstable idling or stalling immediately after ignition. 2. Fuel and air issues: A faulty fuel pump may suddenly jam or malfunction, causing the fuel pump to underperform or stop, leading to insufficient fuel supply and stalling. 3. Low fuel system pressure: Insufficient fuel supply due to low fuel pump pressure, fuel line leaks, low electrical current, or a damaged fuel pressure regulator. 4. Clogged or leaking fuel injectors, causing poor atomization and insufficient fuel supply, leading to stalling. Precautions for starting the car: 1. Avoid prolonged continuous use of the starter. 2. Avoid restarting the engine within less than 15 seconds and releasing the key immediately after starting the engine. 3. Avoid pressing the accelerator pedal too hard immediately after starting. 4. Avoid driving off immediately when the idle is unstable. 5. Avoid sudden starts without observing the surroundings. 6. For automatic transmission vehicles, avoid push-starting or towing to start, as it may damage the transmission.

[IanAnn]

I've encountered this issue before - the car starts but shuts off after just a few seconds, and the underlying causes can be quite complex. For instance, insufficient fuel supply due to a malfunctioning fuel pump or clogged filter can prevent the engine from getting enough fuel to sustain operation. Another common culprit is problems in the air system, such as excessive carbon buildup in the throttle body or a faulty mass airflow sensor, causing the ECU to miscalculate and trigger immediate shutdown. On the electronic side, ECU programming errors or sensor failures (like a bad crankshaft position sensor) can also lead to similar symptoms. I recommend first checking the fuel lines and intake system for leaks, and trying to clean the throttle body. If this happens frequently, you should take it to a professional repair shop for diagnostics - sudden stalling while driving can be dangerous and compromise road safety. Regular maintenance is key to preventing such issues, which ultimately saves both money and headaches.

[OColin]

I've worked on many cars, and this issue is often caused by problems in the idle control system. The engine stalls immediately after starting because it can't maintain RPM, which is usually due to a dirty or clogged idle air control valve, or vacuum leaks causing improper air-fuel mixture. Poor fuel quality leading to unstable fuel injection can also cause stalling. Check if the spark plugs are worn out and the condition of the ignition coils, as incorrect ignition timing can also lead to stalling. You can try cleaning the idle air control valve or replacing the fuel filter yourself - sometimes simple maintenance solves the problem. However, prolonged operation like this can damage the engine. Get it diagnosed as soon as possible to prevent minor issues from becoming major ones. After all, safety comes first.

[SanLilah]

My car did the same thing last month. It starts and then immediately stalls, which is really annoying. It could be that the battery is too low on charge and can't sustain the power after starting. If the throttle has too much carbon buildup, the computer can't adjust it, causing the engine to shut off automatically. When parked, try removing the key, waiting a few seconds, and then starting it again—it might work. Check if the battery terminals are loose or corroded, and try cleaning the throttle. This affects driving, so it's recommended to visit a quick service station to check the fuel system and ensure trouble-free travel.