[Mustangman25]

This, sadly is a common problem with the Focus Zetec...there are also a handul of solutions, among them, replacing the plugs, wires, ignition coil, air filter, fuel filter, fuel pump (if it hasn't already been done under the recall) PCV valve, EGR valve, and the DPFE sensor...yeah. I would start with the cheap stuff (plugs, wires) and if that doesn't work, then your DPFE sensor should have an extended warrenty on it, since it's a junk part. Also, call your dealer to make sure that your fuel pump was replaced under the recall.