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If you're looking for a 2002 Ford Ranger 2.3 vacuum hose diagram, you've come to the right place. I'm going to show you where to find the diagram and how to use it.. Locating a clear 2.3 ford ranger vacuum hose diagram is the first step toward clearing those stubborn check engine lights and restoring your engine's performance. Let's dive into the specifics of these iconic small-block and dual-overhead-cam engines.