03, 5.7, 118000 mi.
Searching idle 400-1100 then dies, did not get code for 3 days, it would clear while driving.
Get code, change o2 sensors before and after cat.
Still getting code and exhaust is smelling a little rich.
Truck has not died or idle search sinse changing sensors.
I did disconnect battery to clear, it comes back.

 

Where is fuel pressure regulator? So that I may see if return line is blocked