1. Dirty or Faulty IAC Valve: Ensure that the valve can open and close properly, and clean or replace it if necessary.
Throttle Position Sensor (TPS) Issues:
1. Faulty TPS: Malfunction or incorrect values can affect the fuel-air mixture and cause the engine to stall.
Vacuum Leaks:
1. Damaged or Loose Hoses: Unmetered air can enter the engine, causing a lean air-fuel mixture and potential stalling.
Faulty Fuel Pressure Regulator:
1. Faulty Regulator: Maintains fuel pressure. A malfunction can cause too little or too much fuel to reach the engine.
Engine Temperature Sensor (ECT) Issues:
1. Incorrect Readings: Can mislead the engine control unit (ECU) about engine temperature, affecting air-fuel mixture and idle stability.
O2 Sensor Issues:
1. Faulty Sensor or Wiring: Affects fuel-air mixture and may lead to stalling.
Spark Plug Problems:
1. Worn Spark Plugs or Improper Gap: Insufficient or inconsistent spark can cause combustion issues.
Air Filter Clogging:
1. Dirty Air Filter: Restricted air flow can affect fuel-air mixture.
Mass Air Flow (MAF) Sensor Issues:
1. Dirty or Malfunctioning MAF Sensor: Can give inaccurate readings, affecting air-fuel mixture.
Injector Issues:
1. Leaks or Clogs: Affect the fuel delivery and cause stalling.
Fuel Pump Problems:
1. Low Fuel Pressure: Can lead to fuel starvation and engine stalling.
Mechanical Faults:
1. Engine Mechanical Issues: Problems like worn piston rings, valves, or timing issues may lead to stalling.
