1. Open the hood: Pull the hood release lever inside the car, then lift the hood and prop it open using the support rod.
2. Locate the throttle body: On the engine, look for a cylindrical component with a butterfly valve inside. This is the throttle body.
3. Find the IAC valve: The IAC valve is usually mounted on the side of the throttle body. It's a small, round or cylindrical device with one or more electrical connectors attached to it.
Additional Details:
- In the 1997 Hyundai Sonata, the IAC valve is typically located on the bottom side of the throttle body.
- It may help to disconnect the air intake hose to have a clearer view and easier access to the IAC valve.
- Check the vacuum hoses connected to the IAC valve for any leaks or cracks. Repair or replace the hoses if necessary.
Note: If you're experiencing idle-related issues in your 1997 Hyundai Sonata, a faulty IAC valve may be the culprit. However, it's essential to have it diagnosed by a qualified mechanic before attempting any repairs, as there could be other underlying issues as well.