Hey, this is a good thread. Don't let it die (like my car)!
My 95 Contour also has a bad, rough up and down idle and sometimes kills when cold. But since I drive on the highway mostly I have lived with it.
I replaced the IAC (Idle Air Control?) valve on my '89 Ford Tempo to fix a bad idle and it worked, but that only cost $50.
The Contour IAC is $189?
Wow!