Hi, I just had the same problem with cracked PCV rubber hose. Solved my cold start dying/stoplight dying first 5 minutes/rough idle cold/still a little rough idle hot problem. Here was my post! Great pictures on this thread for the PCV!
http://www.contour.org/ubbthreads/showflat.php?Cat=&Board=trouble&Number=1153756&page=0&view=collapsed&sb=5&o=365&fpart=1- Contour_97
Ex Ford Motor Dearborn Design Engineer/Analyst - 7 years
Now Caterpillar Valvetrain Design Engineer - 6 years
97 Contour GL Sport/Auto/2.5L V6/80,500 miles
Love my Contour when it works!