Here are the best places to look:
* Your Owner's Manual: Check your owner's manual first. While it might not have a full-blown diagram, it might have a simplified representation or at least identify the major vacuum components.
* Haynes Repair Manual or Chilton Repair Manual: These are inexpensive manuals specifically for automotive repair, and they usually contain detailed vacuum diagrams for different engine options. Look for one specific to your year and engine size. These are available at most auto parts stores or online retailers.
* Ford Service Manual: The official Ford service manual will be the most comprehensive source. This is often a much more expensive option than Haynes/Chilton, but provides greater detail. You may be able to find a PDF version online (though the legality of these varies), or you can purchase a physical or digital copy through online retailers or possibly a Ford dealership.
* Online Forums: Search online forums dedicated to Ford Rangers, such as the Ford Ranger forums on sites like Ford-trucks.com or others. Someone might have scanned their manual's vacuum diagram and posted it. Be sure to specify your engine size when searching.
* Auto Parts Store Websites: Websites like AutoZone, Advance Auto Parts, or Napa Auto Parts may have some basic diagrams or schematics available. However, these are often less detailed than the manuals.
Remember to always specify your engine size (e.g., "1997 Ford Ranger 4.0L vacuum diagram") when searching to get the correct diagram. Using the wrong diagram can be very confusing and potentially harmful.
