Most commonly this is caused by a sticking brake caliper. Ford has had more than their share of trouble on trucks in the '70s and '80s. The next time this happens, park on a slight incline, then shift to neutral to see if the trucks rolls on its own. If not, leave it in park, then reach in back and open the bleeder screw or loosen the steel line at the master cylinder. If it still doesn't release, replace both front calipers.
Monday, April 23rd, 2012 AT 10:23 PM