well on way way to work running about 45mph. i feel a thunk/mild jerk , check engine comes on and sputters for a hundred feet and dies. will not crank. i went on to work called wife to come get it towed back to house. she gets there and it cranks for her. WTF well run it for another couple of days and no prob well on fouth day on way home she does it again so this time i was able to feather the pedal and kept it cranked well it smoothed out and didnt die this time but light still came on pulled into parking lot at a local casino and let it sit for a couple mins (30 mins) went back out cranked no light no prob.

things done lately;
hutch
ipr rebuild
ipc
new fuel pump
oil change reg.
crank pos sensor

all done in last 60 days never had prob before just started two weeks ago done it twice hasnt done it since...

 

Do you have AE or some way to pull the codes that are stored. That would help. How many miles on your truck? What year? Have you had new Injectors or injector orings done lately? Was the CPS you installed a ford OEM? Live data showing Pulse width, IPR %, ICP voltage/pressure, TPS voltage.
You need to have your codes read by a program that will read all of the codes. It could be Idle Validation Switch/Throttle Position Switch.

 

The nearest B.E.S.T. I can find is Baton Rouge. Thunk? That's a new one on me, but I wouldn't like mechanical clunks with my SES. What color is the CPS and is it OEM?