98 ford expedition stalls while driving or in park after it has ran for a while

'98 Ford Expedition

1. Symptoms started to occur a month ago.
2. Car stalls while driving or in park after 20 minutes
3. Can't turn on car for 24 hours.
4. If I unplug the battery for 20 minutes, I am able to run the engine for 20 minutes
5. After stalling and not unplugging the battery, I'll put in starter fluid and the car turns on immediately for 10 seconds before stalling(until starter fluid is gone).
6. There is spark
7. No noise clicking when turning key on after it stalls
8. No check engine light

What could be causing this?