The PCV valve on a 1989 Ford Ranger 2.3L 4-cylinder engine is typically located on the
valve cover. It's a small, usually black, plastic valve with a hose attached to it. It's often near the back (firewall side) of the valve cover, but its exact location might vary slightly depending on the specific engine configuration.
You'll need to visually inspect the valve cover to locate it. Look for a small, capped fitting with a hose leading to the intake manifold or air cleaner assembly. The hose is usually a smaller diameter than other vacuum lines in the engine bay.
