Engine dies when taking off from idle

[glsimmons1]

Love my truck but DANG. Alright I have a 2003 F250 7.3 w/250,000 on it. I have replaced the CPS due to stalling, the IPR due to stalling, the glow plug relay due to smoking and have done major cleaning and removing bad corrosion on a lot of the connections under the hood within the past 3 months that I have had the truck. What happens now is when I go to take off from a stop the truck looses RPM's and dies. It starts back up and if I give it excess gas it will work. I noticed also that it does it a lot more if I am on an incline and try to go from stopped. Let me know what y'all think. I am thinking fuel pump but it has no issues while driving.