Wont stay running.

[JMilton]

1988 Bronco II
2.9
EFI
Automatic Transmission

Walk out in the morning and turn the key and the truck starts first crank every time. It will run great for between 5 - 10 minutes and then it will die. When it dies it doesn't sputter or bog out, it shuts off like someone turned the key off, a nice and clean shutdown. Once it shuts of it needs to cool all the way down before I can restart it.
After this began the following parts have been replaced;
Ignition Coil
ECC
Spark Plugs
Spark Plug Wires
Distributor
Distributor Cap
ICM on Distributor
Both Fuel Pumps
Fuel Filter
I've been a mechanic for a long time, and have been working on cars/trucks since I can remember. I have an extremely large amount of diagnostic resources at my disposal and am totally stumped on this one. Anyone have any ideas?
I have tested fuel volume and spark after it dies and both are there but still won't run.

 

[bIIjr]

im iin the same boat as you with mine my friend have tried to pull codes yet

 

[bfiakas]

Check your codes or you will be looking for a fart in a dark room otherwise! Also check your wiring at the main conections near the driver side fender apron and the ground at the computer.I ran a new ground wire from the computers grounding point to the the battery and my mystery shut downs have stopped