1. Idle Air Control (IAC) Valve: The IAC valve is responsible for controlling the air that bypasses the throttle body, and it can become dirty or faulty over time, leading to stalling.
Potential Fix: Clean the IAC valve or replace it if necessary.
2. Throttle Body: The throttle body controls the amount of air that flows into the engine, and it can become dirty or stuck, causing stalling.
Potential Fix: Clean the throttle body and check for proper operation.
3. Fuel Pump: A weak or failing fuel pump can cause the engine to stall, especially under load (when the brakes are applied).
Potential Fix: Test the fuel pump and replace it if necessary.
4. Mass Air Flow (MAF) Sensor: The MAF sensor measures the amount of air entering the engine, and a faulty sensor can provide incorrect readings, leading to stalling.
Potential Fix: Clean the MAF sensor or replace it if necessary.
5. Ignition System: A failing ignition coil or spark plugs can cause the engine to stall.
Potential Fix: Check the ignition system components and replace any faulty parts.
6. Vacuum Leaks: A vacuum leak can cause the engine to run lean, leading to stalling.
Potential Fix: Inspect the vacuum hoses for cracks or leaks and repair or replace them as necessary.
I suggest starting with the first four suggested repairs as they are usually the primary cause of these symptoms.
It's always recommended to diagnose the exact cause before attempting any repairs to ensure effectiveness and safety. A certified mechanic or an experienced individual with knowledge of automotive repair can further assist in identifying the specific issue and performing the necessary repairs.
