Ford Repair Questions? Ask a Mechanic for Answers ASAP
This is such a unique symptom, I have not experience this type of concern before. The most logical cause of the symptom is in the clutch release bearing binding and not returning to the at rest position when the pedal is released, you can confirm this theory by performing a test. The next time it happens if the release bearing is bound you will have an incredibly soft clutch pedal, if it comes up at all it will take very little force to push it back down. If this happens get under the truck and remove the rubber inspection plug on the lower drivers side of the transmission bell housing and spray some wd-40 up inside on the tube portion of the slave cylinder that the release bearing rides on, try not to get too much overspray on the clutch disc itself, then excercise the clutch pedal seveal times to break up the dirt and dust that may be binding the release bearing If this does not correct the symptom, you may need to replace the slave cylinder and release bearing assembly.