* Repair Manuals: A Haynes or Chilton repair manual specifically for a 1993 Ford Explorer will almost certainly have a vacuum diagram. These are readily available online and at auto parts stores.
* Online Forums: Websites and forums dedicated to Ford Explorers (like Explorerforum.com) often have members who have dealt with vacuum issues and might have diagrams or photos they've shared. Search for your specific engine (e.g., "1993 Ford Explorer 4.0L vacuum diagram").
* Online Parts Websites: Some online parts retailers (like AutoZone, Advance Auto Parts, or RockAuto) might have diagrams available if you look up parts related to vacuum lines. While not always complete diagrams, they might offer clues.
* Your Local Mechanic/Auto Parts Store: A local mechanic familiar with older Ford Explorers might have access to diagrams or be able to help identify lines. Some auto parts stores may have access to online databases with diagrams, though this is becoming less common.
Important Note: When working with vacuum lines, remember to:
* Identify the lines carefully: Misplacing even one line can cause significant problems.
* Use the correct size and type of hose: Using the wrong hose can lead to leaks.
* Check for leaks after reconnecting everything: A small leak can dramatically affect performance.
Good luck with your search! Remember to always specify the engine size (4.0L V6 is common for the 1993 Explorer) when searching for diagrams.
