on my 96 ram 1500, my 4x4 wont work. it worked last winter, and i went to engage it and got nothing. i took the vac. lines off, only 1 was sucking, and the other didnt have a good seal around it. also is there a fuse that could be blown? it just seems weird that it was working and now its not. if anyone care give me suggestions on how to fix this problem i would greatly appreciate it.

 

another vacuum cad question. do they never end....

read this. no fuse. check for vac on one line in 2wd and vac on the other in 4wd. the vac must be right before anything else can work.

http://dodgeram.org/tech/repair/4X4/4x4_engagment.htm

 

yeah my 4x4 didnt work when i bought it but i replaced the 4wd selector switch (like $24 at napa) it the one the vac lines go to on the t-case. and now everthing works as it should

 

with the t-case in 2wd the black line should have 16-20" and the red line should have no vac. when the t-case is in 4wd the red line should have 16-20" and the black line should have no vac.

if vac checks out ok, the problem lies in the cad itself. let us know what you find

 

After the vacuum lines check out fine, pull the cad off, and try to slide the collar by hand. The shafts seem to get burrs after a while, and the collar doesn't slide freely.

 

thanks for all your help, im gonna give it a try tomorrow and see what i can figure out. ill let yall know how it works

 

i have had same prom with mine many times i got 4x4 posi lok and did away with the vacume system

 

4x4 Posi-Lok Positive Axle Engagement System for Dodge 4x4s This is the way to go. I installed it in about thour. Works great

 

Lone 136: Did you install your Posi-Lok recently? Just wondering if they still make the cable way too long like I read in another post. Thanks.

 

yes just a couple months and it is still to long but works great