1994 metro stalling

Hey all, a buddy of mine has a 1994 with stalling problems. Im being told when he gets to 45 mph it dies. when he starts over it will do the same , runs fine til he gets to 45 then dies off , i believe its an automatic. if anyone has any ideas please let me know and thanks in advance.:loser:

Fuel pump and catalytic converter are the first two things that come to my mind.

How does it do under hard acceleration from a start? Does the condition change with duration of running time or hot/cold engine?

-MechanicMatt