1. Fuel Pump Failure: A faulty fuel pump can cause inconsistent fuel delivery, leading to stalling.
2. Clogged Fuel Filter: A clogged fuel filter can restrict fuel flow, causing the engine to stall.
3. Faulty Fuel Pressure Regulator: A malfunctioning fuel pressure regulator can cause incorrect fuel pressure, resulting in stalling.
Electrical Issues
1. Faulty Ignition System: Problems with the ignition coil, spark plugs, distributor cap/rotor, or ignition wires can cause the engine to stall.
2. Bad Crankshaft Position Sensor (CKP) or camshaft position sensor (CMP): These sensors provide important signals to the engine control unit (ECU) for managing fuel injection and ignition timing.
3. Loose or Damaged Wiring Connections: Loose or damaged wiring can lead to electrical malfunctions and cause stalling.
Air/Fuel Mixture Issues
1. Vacuum Leaks: Vacuum leaks can introduce unmetered air into the engine, affecting the air-fuel mixture and leading to stalling.
2. Dirty Throttle Body: A dirty throttle body can obstruct airflow, causing the engine to stall.
3. Faulty Mass Airflow (MAF) Sensor: A malfunctioning MAF sensor can provide incorrect air-flow data, leading to a wrong air-fuel mixture.
Mechanical Issues:
1. Low Engine Compression: Low compression due to worn piston rings or valves can cause the engine to stall.
2. Timing Issues: Incorrect timing between the camshaft and crankshaft can lead to engine stalling.
3. Catalytic Converter Issues: A clogged catalytic converter can restrict exhaust flow and cause the engine to stall.
Other Potential Causes:
1. Overheating: If the engine is overheating, the ECU might shut off the engine as a safety measure to prevent damage.
2. Computer Issues: In rare cases, a computer glitch can cause the engine to stall.
To identify the exact cause, it's recommended to have the vehicle diagnosed by a professional who can inspect and test the various components mentioned above.
