1. Fuel Pump: Check the fuel pump and ensure it is delivering enough fuel to the engine. A faulty fuel pump can cause the engine to stall or die while driving.
2. Idle Air Control (IAC) Valve: The IAC valve regulates the air that enters the engine at idle speed. A faulty IAC valve can cause the engine to stall or die when idling or at low speeds.
3. Oxygen Sensor: The oxygen sensor monitors the oxygen content in the exhaust gas and sends this information to the engine's computer (ECM) to adjust the fuel mixture. A faulty oxygen sensor can cause the engine to run rich or lean, leading to stalling or rough running.
4. Crankshaft Position Sensor: The crankshaft position sensor monitors the position of the crankshaft and sends this information to the ECM to control ignition timing and fuel injection. A faulty crankshaft position sensor can cause the engine to stall or die while driving.
5. Catalytic Converter: A clogged or damaged catalytic converter can restrict exhaust flow and cause the engine to run poorly or stall.
It's important to have a qualified mechanic diagnose the exact cause of the problem to ensure a proper repair.