4WD Not Working
 

Hi Guys, I have a 2002 7.3L F250 when i engauge 4wd the front wheels dont lock in with the hubs in auto or lock but if a go for a drive with the hubs in lock then engauge 4wd it engauges straight any.Has anyone got any ideas on what is going on, i have had to get towed out of the mud 4 times in the last few weeks it is becoming a pain in the ass.

factory hubs are bad. swap them or take them off breakthem down and clean them.

after that check ur vacumn lines those factory hubs run off vac.. if there a hole or there torn there is ur prob. just trace the lines and look and listen