1995 Ford Mustang Engine keeps stalling or won't start at a

My 95 mustang GT won't start all the time, and when it does, it will run for approximately 10 minutes
then cut out all of a sudden, regardless if your driving
or just idling. Sometimes if you wait about 20 minutes
it will start up again and then in another 10 minutes it stalls again. Do you know what this problem
could be.
Thanks Paul