Stalled once in a while. Replaced the under car fuel filter. Car ran great for one week, and then the stalling resumed. Someone mentioned the in tank fuel filter or some kind of relay switch. Any help would be greatly appreciated. She is sitting in my driveway will not start with only 128,000 miles. Would like to keep her without bleeding me to death. Thanks

Couple of things to check, does it stall at idle or does it stall if you take your foot off the accelarator? When it dies do the revs just drop off or go lumpy?

The fuel relay is located on left hand side of the relays second row position E - you cannot miss it is a big white one.

As you are in the US look here - the bible - for further guidance
http://brickboard.com/FAQ/700-900/EngineFuelinjection.htm#FuelPumpandFIRelayDiagnost icTests

But it could be a number of things inlcuding the idle control valve - which model do you have?