Instead of searching for a visual representation, focusing on its location and function will be more helpful.
What to expect:
* Location: It's *almost certainly* integrated into the fuel rail itself. The fuel rail is the long metal bar that runs along the top of the intake manifold, holding the fuel injectors. The regulator will be a small component *on* the fuel rail, often with a vacuum line attached.
* Appearance: It will likely be a small, cylindrical or slightly rectangular component, possibly with a single vacuum line connected to it. It might have a single electrical connector (less common on this generation). It may have some markings, but it will not be dramatically different from other fuel rail-mounted regulators. Its color could be black or metallic.
* Function: It regulates fuel pressure by sensing the manifold vacuum and adjusting the pressure accordingly.
Instead of a visual search, try these:
1. Consult a repair manual: A Chilton's or Haynes repair manual for your specific year and model will show a diagram of the fuel system and highlight the fuel pressure regulator's location.
2. Online parts diagrams: Many online auto parts retailers (like AutoZone, Advance Auto Parts, etc.) allow you to select your vehicle's year, make, and model. Their diagrams often show the fuel system components, including the regulator.
3. Search for "2000 Mercury Sable fuel rail" with images: This will show pictures of the fuel rail on your vehicle, and you should be able to identify the regulator as a small component attached to it.
Remember to always be cautious when working on your fuel system. Fuel is flammable, and improper handling could be dangerous. If you're not comfortable performing the work yourself, consult a qualified mechanic.
