It's important to note that the exact location can vary slightly depending on the specific engine (2.3L, 2.5L, 3.0L, or 4.0L V6). To be certain, you'll need to:
1. Consult your vehicle's repair manual: This is the most reliable source of information. The manual will have diagrams showing the precise location.
2. Use an online parts diagram: Many auto parts websites (like AutoZone, Advance Auto Parts, etc.) have online parts diagrams for your specific year and engine. Search by your vehicle's VIN or year/make/model/engine. Look for the diagram that shows the engine. The CMP sensor should be clearly identified.
Without knowing the specific engine in your 1999 Ford Ranger, providing a more precise location is difficult and potentially misleading. Use the above resources to find the exact location for your vehicle.