The PCV valve itself is typically located on the intake manifold, but it's not a separate, easily identifiable unit alongside an oil separator. The oil separation function is partially handled by the PCV valve's design and the crankcase ventilation system's overall layout which includes passages within the intake manifold itself. Oil vapors are separated *within* the system, rather than in a discrete oil separator canister.
To locate the PCV valve, you'll need to consult a repair manual specific to your year and model Ford Taurus with the 3.0L 24V DOHC engine. The manual will have diagrams showing its location on the intake manifold. It's usually near the back of the intake manifold, often connected to a hose going to the intake.
