Hey guys, My wife and I sold her 2002 Mercury Cougar a couple of days ago. It was running perfectly for us. However, the buyer drove it about 40 miles and it started shutting off and threw the check engine light. Well, the girl loves the car and wants to keep it, but only if we can fix it. So we handed the check back, got the keys back, and now I need to fix it for her. I took the car to AutoZone to check the codes, it threw one for fuel rail pressure sensor circuit malfunction or something like that, so basically it has a bad fuel pressure regulator. Question: Where is the fuel pressure regulator?? Is it hard to change on these cars? I can order the sensor for like $30, but I have no idea where it is or how to put it in. Can someone please point me on the right track here? The car has the DOHC 2.5 in it. Thanks a lot!