The IAC valve regulates the amount of air that bypasses the throttle plate when the engine is idling. If the IAC valve is faulty, it can cause the engine to stall when you release the gas pedal or put the car in gear.
2. Dirty Throttle Body:
A dirty throttle body can restrict airflow and cause the engine to stall. Cleaning the throttle body can often resolve this issue.
3. Faulty Mass Air Flow (MAF) Sensor:
The MAF sensor measures the amount of air entering the engine. If the MAF sensor is faulty, it can send incorrect signals to the engine computer, which can cause the engine to stall.
4. Faulty Oxygen Sensor:
The oxygen sensor measures the amount of oxygen in the exhaust gas. If the oxygen sensor is faulty, it can send incorrect signals to the engine computer, which can cause the engine to stall.
5. Faulty Fuel Pump:
A faulty fuel pump can cause the engine to stall due to lack of fuel. If the fuel pump is faulty, it may not be able to deliver enough fuel to the engine, causing it to stall.
6. Faulty Fuel Pressure Regulator:
A faulty fuel pressure regulator can cause the engine to stall due to incorrect fuel pressure. If the fuel pressure regulator is faulty, it may not be able to maintain the correct fuel pressure, causing the engine to stall.
7. Faulty Ignition System:
A faulty ignition system can cause the engine to stall due to lack of spark. If the ignition system is faulty, it may not be able to generate enough spark to ignite the fuel mixture, causing the engine to stall.
8. Faulty Engine Control Module (ECM):
The ECM is the computer that controls the engine. If the ECM is faulty, it can send incorrect signals to various components of the engine, which can cause the engine to stall.
