Have a 2000 CRV stalls when at idle sitting stop light AutoZone said needs tune-up changed spark plugs wires cap roter It still but runs fine on the road Any ideas?

- Faulty Idle Air Control Valve: IAC valve controls the air that bypasses the throttle plate when the engine is at idle. A dirty or malfunctioning IAC valve can cause the engine to stall. Clean or replace the IAC valve if necessary.

- Vacuum Leak: A vacuum leak can cause the engine to run lean, which can lead to stalling. Check all vacuum hoses and connections for cracks or damage. Repair or replace any damaged hoses.

- Faulty Fuel Pressure Regulator: Regulates the pressure of fuel delivered to the engine. If malfunctioning, it can cause fluctuations in fuel pressure leading to stalling. Check and replace if needed.

- O2 Sensor: Responsible for providing information about the oxygen content in the exhaust gas to the engine's computer. Faulty O2 sensors can cause the engine to run inefficiently and stall. Check and replace if necessary.

- Throttle body: Responsible for controlling the amount of air entering the engine. A dirty throttle body can cause airflow issues, leading to stalling. Clean the throttle body using appropriate cleaners.

- Transmission/Torque Converter Issues: If the transmission or torque converter are not functioning correctly, it can affect engine performance and cause stalling. Have a qualified mechanic inspect the transmission and torque converter for any issues.