Hello,

I drive a '94 Dodge Ram 1500. Has the bulletproof 318 in it. Went to drop my truck into 4 wheel yesterday (after a 7inch dump of snow) and it wouldnt engage. I believe it is engaging at the transfer case itself, but not the hubs.

I've heard it could be the vacuum acuator or some vacuum lines. Anyone know much about this or had the problem themselves? All advice is welcomed.

Thanks,
Qpavel

 

Check some of the other 4x4 threads. My fingers are cold.

 

I suspect vacuum leak, any tips on where to look though? Transfer case? Hub?

 

CAD unit on the front axle. Passenger side, back. The lines end there. Follow them back to the t-case. The steel lines tend to rust... also check the supply line from the passenger side rear of the engine, to the t-case switch.

 

Will do, I'll check it out some and see where I'm at. Appreciate the help.

 

they make a mechanical one that you can replace the vacuum one with it, it only fails if you forget to engage it.

 

I am really need to know about the swap to a mechanical 4wd rather than the one the uses the vacuum lines and all that BS. Parts list web sites and anything would be greatly appreciated!

 

Google Posi-Lok

 

for vac cad help, read this
http://dodgeram.org/tech/repair/4X4/4x4_engagment.htm

 

http://www.summitracing.com/search/y...?Ns=Rank%7cAsc

Heres the link for you they have it at summit racing.