Fuel Rail Pressure and Temperature Sensor

WARNING: This page is about a different car, the 2007 Mercury Mariner and 2007 Ford Escape. However, it is still accessible from the selected car via links, so may be relevant.

The fuel rail pressure and temperature sensor:

measures the pressure and temperature of the fuel rail and sends these signals to the PCM.
uses intake manifold vacuum as a pressure reference.

For removal and installation, refer to ELECTRONIC ENGINE CONTROLS - 2.3L article.