^^^^Nope they made Duratec in the 03s in certain states, first year the Duratecs (PZEV)came out, ive got an 03 Duratec myself, hence he stated "coils". But anywho Id plug the coils back into there normal spots. I had a bad ignition coil the other day, was running like urs, best way to check that is to pull the connection on each coil plug, if the car wants to die when you pull the 1st one off then its good, then go to the second one and do the same thing, if you pull a plug and the car does nothing then its a bad coil.