cruise control not working sometimes

[gearhead]

Three things that normally will stop cruise and jakes. One the clutch pedal position switch either bad of week pedal return spring. second brake pedal sticking from the pin freezing up,dirt on the bottom under the pedal holding down slightly or the plunger in the foot valve freezing up from dirt or the pressure sensor on the service line from the brake pedal. Third the vehicle speed sensor signal.