4 wheel drive problem

cumminspower01 · 06-23-2007, 11:17 AM

i have a 97 ctd and i cant get the front end to lock into 4 wheel drive. i have changed the actuater and still have nothing. transfer case locks in but it want in the axle. if anyone has this problem let me know

pborger · 06-23-2007, 04:39 PM

i have the same problem my vacum pump is shot that could be maybe why yours is'nt working either if you want to by pass that buy a posi lock kit 4x4 Posi-Lok Positive Axle Engagement System for Dodge 4x4s

cumminspower01 · 06-25-2007, 10:19 AM

i had the vacump checked when i put a new power steering pump on and they sayed that it was good. but it may not. anyone know how to check it yourself?

dodgediesel59 · 06-26-2007, 06:09 PM

The vacum pumps do not fail all that often. What i would do is first is put truck in 4 wheel drive. pull vacum line at the front axle actuator and feel the 2 of them and see if you have any vacum there. If no vacum there, go to the top drivers side of transfer case and pull off the 4 line rubber connector and see if you any vacum there. If vacum is found there you have a bad vacum swith in transfer case. Just work your way up the system, they are very simple.