Here are some potential causes, but do not attempt to diagnose or fix this yourself without proper mechanical knowledge and safety precautions:
* Crank Position Sensor (CKP) or Crankshaft Sensor: This sensor tells the engine's computer the position of the crankshaft. A faulty sensor can prevent the engine from starting or cause it to stall.
* Cam Position Sensor (CMP) or Camshaft Sensor: Similar to the CKP sensor, but it monitors the camshaft. A malfunction can lead to similar symptoms.
* Mass Airflow Sensor (MAF) Sensor: Measures the amount of air entering the engine. A bad MAF can cause a lean or rich fuel mixture, leading to stalling.
* Throttle Position Sensor (TPS): Informs the engine control unit (ECU) about the throttle's position. A malfunctioning TPS can cause erratic engine behavior, including stalling.
* Fuel Pump: A failing fuel pump might not provide enough fuel pressure to the engine, causing it to stall.
* Ignition System Problems: Issues with the ignition coil, spark plugs, or ignition wires can prevent proper combustion and lead to stalling.
* Computer (ECU) Problem: Though less likely, a malfunctioning ECU can cause a range of problems, including the ones you describe.
* Other Sensors: Various other sensors contribute to the engine's operation; a fault in any of them could cause this.
What to do:
1. Do not drive the car. Continuing to drive it could cause further damage.
2. Have the car towed to a qualified mechanic or auto repair shop.
3. Have them diagnose the problem using an OBD-II scanner. This will read the trouble codes stored in the car's computer, pointing towards the specific problem.
4. Get the necessary repairs done.
Trying to guess the problem based on limited information is risky and potentially dangerous. A professional diagnosis is essential for safe and effective repair.
