1. Open the hood of your Peugeot 406.
2. Locate the throttle body. It is usually located on the front of the engine, and is connected to the air intake hose.
3. The idle air control valve is usually located near the throttle body. It is a small, round, black or silver valve with a vacuum hose connected to it.
4. If you are still having trouble finding the idle air control valve, consult your vehicle's repair manual or refer to the diagram below:
[Image of a Peugeot 406 engine with the idle air control valve highlighted]
Note:
- The location of the idle air control valve may vary slightly depending on the model year of your Peugeot 406.