* Idle air control valve (IAC): The IAC valve controls the amount of air that bypasses the throttle plate when the engine is idling. If the IAC valve is faulty or dirty, it can cause the engine to stall.
* Throttle position sensor (TPS): The TPS tells the engine control module how far the throttle plate is open. If the TPS is faulty, it can cause the engine to stall by sending the wrong signal to the ECU.
* Fuel pressure: Low fuel pressure can also cause the engine to stall. Check the fuel pressure to ensure it is within the manufacturer's specifications.
* Air Filter: A clogged or excessively dirty air filter can result in inadequate airflow and cause the engine to stall. Checking and replacing the filter as needed is crucial for the engine's optimal performance.
* Vacuum leaks: Vacuum leaks can lead to a lean air-fuel mixture, making it challenging to maintain proper idle speed, potentially causing the engine to stall.
* Faulty Ignition System Components: Issues with ignition components like spark plugs, ignition wires, or the distributor can cause misfiring and stalling, particularly at idle.
If you are not comfortable diagnosing and fixing these issues yourself, it is best to take your vehicle to a qualified mechanic.
