What year?
Most of the Ford cruise controls previous to the Contour use vacuum to pull a diaphragm that pulls the throttle open. They also have a valve on the brake pedal which dumps the vacuum when you step on it, closing the throttle.
Brian
Originally posted by COBM:
I researched the problem and the only car that has this problem was the Mecury Grand Marquis. TB getting stuck while using Cruise contol, (CC) but I do not hate my car actually, I love the damm thing more every day.