Hi new to the forum.
 

I have a 2000 cougar and when im driving it seems like the car is sputtering or hesitating it hard to explain. Changed plugs (used autolite double platinum)wires and new air filter. Any suggestions.

I think you should take your car to a good mechanic.He'll be able to tell you what's wrong.

More Info
 

If you could tell me a little more I might be able to help. Like does it do it all the time or just when stopped or just when driving and what kind of hesitation?