1. Engine Cranks But Doesn't Start: When you turn the key in your car, the starter motor engages and turns the engine crankshaft, which allows the engine to begin the combustion process. If the engine cranks (turns over) but doesn't start, it means there's a problem with the fuel, spark, or air needed for combustion.
2. IACV Function: The primary role of the IACV is to regulate the airflow into the engine when the throttle valve is closed, especially when the engine is idling or at low speeds. It helps control the idle speed of the engine by adjusting the amount of air bypassing the throttle valve.
3. Starting Issues: A faulty IACV can cause issues such as rough idling, stalling, and difficulty starting the engine when it's hot. However, it's not a common cause for preventing the engine from cranking or starting altogether.
4. Other Possible Causes: When a car turns over but doesn't start, it's more likely due to problems related to the fuel delivery, ignition system, battery, starter, or other components essential for the engine to start and run.
5. Troubleshooting: If your car is experiencing difficulty starting, it's important to perform thorough diagnostics and identify the specific cause of the problem. This may involve checking fuel pressure, spark plug condition, ignition system functionality, battery charge, and other vital components.
In summary, a faulty IACV is unlikely to be the primary reason why a car cranks but doesn't fully start. If you're facing this issue, it's recommended to have the car diagnosed by a professional mechanic to determine the exact problem and perform necessary repairs.
