1. Fuel Pressure Regulator: A faulty fuel pressure regulator can cause the engine to stall or hesitate. Check the fuel pressure and replace the regulator if necessary.
2. Idle Air Control Valve: A dirty or faulty idle air control valve can cause the engine to stall or hesitate. Clean or replace the valve as needed.
3. Vacuum Leaks: Vacuum leaks can cause the engine to run lean and stall. Check for leaks in the hoses and gaskets and repair as necessary.
4. Throttle Position Sensor: A faulty throttle position sensor can cause the engine to stall or hesitate. Check the sensor and replace it if necessary.
5. Clogged Fuel Filter: A clogged fuel filter can restrict fuel flow and cause the engine to stall or hesitate. Replace the fuel filter if it is clogged.
