Yo Bronco27,
Try a Self Test for Diagnostic Trouble Codes (DTC)s by my pal, BroncoJoe19 @
http://broncozone.com/topic/14269-code-reader/?pid=74587&mode=threaded
Some basics;
The engine temperature must be greater than 50° F for the Key On Engine Off (KOEO) Self-Test;
and greater than 180° F for the Key On Engine Running (KOER) Self-Test if you can get it running long enough.
Run it around to heat the engine up and shift thru all gears including Reverse.
Make sure A/C is off and transmission is in Park (automatic); or in Neutral for a Manual & release clutch.
Then turn off engine, all accessories/lights (close driver's door) , etc.
Do KOEO test First
Post Code(s) here according to:
KOEO
&
KOER
...
As Fred mentioned, could see a code such as:
DTC 14 or 18; Profile Ignition Pickup (PIP) & Troubleshooting; The top three leads (for PIP signal) can lose continuity with the back plate (ground) on the module when the unit is hot. You should consider a remote mounted TFI. If your TFI is failing from heat, it can give off codes 14 (PIP) and 18 (SPOUT). Stalling/dying or sputtering when hot, but runs when it cools off. This can be caused by a faulty TFI and the biggest culprits are heat. Another culprit can be a wire grounding out.
...
&
In this fast test you'll be able to pinpoint the problem to the ignition control module or the ignition coil or the Profile Ignition Pickup sensor (PIP sensor) in four easy test steps. This test will only help you in a ‘Cranks but Does Not Start Condition’.
@
http://easyautodiagnostics.com/ford/4.9L-5.0L-5.8L/ignition-control-module-tests-1
Ask local mom and pop parts stores if they can loan you some of the test tools needed such as hei spark tester or multimeter, etc.
Do this Test right after it stalls it has stalls, preferably on a warm day.