[mustangman65_79]

I am having the same problem with my '89 bronco, and I think I got it down to one thing. The fuel pump relay. When my bronco did this, I took the relay off, and found that the conections were very much junked up. I cleaned them off, and haven't had the same thing since. Also u might need a new relay, if it does it when the motor gets warm, this would most likely be it.