* Crankshaft Position Sensor (CKP): This sensor tells the computer the position of the crankshaft. A faulty CKP sensor can cause the engine to start, run briefly, and then die because the computer loses track of the engine's timing.
* Cam Position Sensor (CMP): Similar to the CKP, this sensor monitors the camshaft's position. A malfunctioning CMP can also lead to the engine shutting down after a short period.
* Fuel Pump: The fuel pump might be failing to maintain sufficient pressure. It could be weak, clogged, or have a faulty relay. The car might start because there's residual fuel in the line, then shut off once that's used up.
* Fuel Filter: A clogged fuel filter restricts fuel flow, causing similar symptoms to a failing fuel pump.
* Mass Airflow Sensor (MAF): A dirty or faulty MAF sensor provides incorrect readings to the engine control unit (ECU), leading to poor fuel mixture and stalling.
* Throttle Position Sensor (TPS): A malfunctioning TPS gives the ECU inaccurate information about the throttle position, potentially causing the engine to shut off.
* Ignition Coil(s): If the ignition coil isn't functioning correctly, it may not be able to consistently provide the spark needed to ignite the fuel-air mixture.
* Battery/Alternator: While less likely given it starts, a weak battery or failing alternator might not be able to supply enough power to keep the engine running consistently. Check battery voltage and alternator output.
* Computer (ECU) Problem: Although less common, a malfunctioning ECU can cause a variety of problems, including intermittent stalling.
Troubleshooting Steps:
1. Check engine codes: Use an OBD-II scanner to read any diagnostic trouble codes (DTCs) stored in the ECU. This will point you towards the most likely culprit.
2. Check fuel pressure: A qualified mechanic can test the fuel pressure to see if it's within the specified range.
3. Inspect fuel filter and pump: Visually inspect the fuel filter for blockages. A mechanic can check the fuel pump's output.
4. Check the battery and alternator: Test the battery voltage and have the alternator's charging system checked.
5. Inspect sensors: Visually inspect the CKP, CMP, MAF, and TPS sensors for damage or loose connections. Replacing these sensors is often relatively inexpensive.
Important Note: This is just a starting point. Without more information, it's impossible to pinpoint the exact cause. You should take your car to a qualified mechanic for proper diagnosis and repair. Attempting to diagnose and fix this yourself could lead to further damage or injury.
