Where is the PCV valve in a 2003 Mercury mountaineer?

In a 2003 Mercury Mountaineer, the PCV (Positive Crankcase Ventilation) valve is located on the driver's side of the engine. It is typically found on the valve cover, connected to a rubber hose that leads to the intake manifold. You may need to remove the engine cover or other components for easier access. Be sure to check the vehicle's service manual for specific details and diagrams.