99blacksesport wrote:
I thought Contours had 2 timing chains???

Depends on what motor you've got. There are two possibilities. The six-cylinder ?Duratec? motor uses two timing chains, one for each bank of three cylinders. These ought to last the life of the motor. The four-cylinder ?Zetec? motor uses a single rubber timing belt, which ought to be replaced every 60,000 miles.