...i'd suggest to you, if no one has anything else to add, that you leave the car for a morning (which you have off), hook up a fuel pressure gauge the night before, and observe what the pressure is at the rail (as you've just replace the pump) in one of these cold start situations.... this might help some
http://minimopar.knizefamily.net/fuelsystem.html
if you have proper pressure at the rail, then you could begin looking at sensors without wasting any money unnecessarily.
Originally Posted by islandphile