We were heading home from a job saturday pulling a 6x12 enclosed trailer. the truck is a 95 F-250 4x4 with EZ-dumper.When we started to slow down for traffic light the front of the truck started to bounce and sutter! This went on for about 200ft until we were able to pull off the road. Can anyone tell me what might have caused this or what I can do to prevent this from happening. Has this ever happened to anyone? Thanks.