Q: How do you remove and install the fuel pressure regulator in a Toyota Matrix and Pontiac Vibe?
A: Relieve the fuel system pressure, then disconnect the cable from the negative terminal of the battery. Remove the fuel tank cap. Remove the Fuel Pump assembly. If you're working a 2005 and later model, remove the plastic support on the bottom of the pump by releasing the clips with a screwdriver. Twist the fuel pressure regulator from the assembly. Installation is the reverse of removal. Be sure to install a new 0-ring(s) on the fuel pressure regulator.