[fwttg]

MrAnon, good timing! I was hoping to update in the next day or two.

Fuel pressure is to spec's at the injector rail. Spark on all cylinders is good when cranking immediately after stall. The check engine light came on at stall but then it and the cooling fan would cycle on and off with the key on but not cranking. No codes were captured until a Code 14 after changing the Coolant Temp. Sensor as posted above.

Finally bit the bullet and changed the ECM. So far, with limited testing, the vehicle has run up to 20 minutes without stalling and can be turned off and restarted at any point during that time.

The cooling fan has yet to kick in. From what I have read the temperature has to be pretty high to trigger the fan so, for now, problem fixed.