Trouble code read "high fuel pressure", "running rich bank 1 and 2", don't remember the code. Took the vehicle to mechanic who diagnosed fuel system condition, checked fuel pump pressure (5 psi too low), checked rail pressure (10 psi too high), took vacuum line off the "fuel pressure regulator" at front of rail, pressure is meant to drop by about 10 psi, did not change without vacuum, which lead to diagnosis of faulty fuel pressure regulator. He also recommended replacing fuel pump and fuel filter. Total cost of $900 with labor. No tune-up ever, all original engine equipment including fuel and ignition systems components. I did replace the MAF sensor recently when vehicle began rough-idling and stalling.
My question is what is the component called that bolts on (two torx bolts) to front of the fuel rail, and has a small-diameter vacuum line coming of the top of it? I can't find it in any of the online parts stores, but do remember the mechanic telling me that it is a motorcraft part only. Thanks for your help.
Tuesday, March 26th, 2013 AT 6:21 PM