hello Scotty I have 94 civic and I cleaned the throttle and MAF sensor and put the new fuel pump, but the car still die.
What could it be?

tons of things can to that, but check for vacuum leaks first as in this video https://www.youtube.com/watch?v=zMok2y05jNE&t=77s

Those are also known for faulty MAIN relays, which stall out and then restart, and for faulty distributors.