You could try cleaning it first.

 

The fact that it does run fine when first started implies it's probably not the IAC.
Test function as per instructions on this link: http://oldfuelinjection.com/?p=39

Redo your KOEO. You'll probably see the EVPS code still.

Give the actual code #. Not what you think the code number means.

Another Link to see: https://www.f150forum.com/f10/heads-...05/#post623219

 

It was a code tps out out of circuit and code egr out of circuit

 

Code number please.

 

I think it was 23 and 31

 

Next time it does it flip the key off and on real fast, without letting the engine die and see if the idle corrects itself.

 

31 = (V8 Truck) EVAP control system below minimum voltage.

 

What does that mean I have no idea

 

I have replaced the iac and tps with brand new parts the tps brought the erratic idling from between 500 and 2000 and stalling at stops to 500 and 1000 and still dying at stops

 

get some carb cleaner or brake cleaner and spray it around anywhere you could possible have a leak. do it with the truck running and see if it changes the idle around any specific location that you spray. could be a leak in your vacuum lined somewhere or a manifold leak. carb cleaner should raise the idle. break cleaner should make the truck die.