sounds like the plug wires, does the car idle fine?

if it idles fine then it was the same problem I had and the plug wires went bad, I thought they were fine but after 108k or so they wern't good anymore

- 95 Mystique LS - Zetec/5spd - 99 Contour SeVT Sport - Duratec/5spd Official NE-CEG Contour/Mustang Family