Originally Posted by cycloneranger

hi i have a 1989 dodge cummins when driveing down the road and hit a slight bump or transfer on to a bridge a mean vibration starts almost like driveing on rumble strips when i slow way down almost to a stop it will stop and no more vibration it only does this sometimes and not on all bumps i pulled front drive shaft thought this was it cause of bad u joint but i still ran into the problem please help this is getting anoying