4wd won't stay engaged

hammenjeeps

New member
94 Wrangler, 4.0L, 4" lift, 33" MTs. I engage 4wd, the light comes on and I'm in 4wd, after a few seconds it disengageds. Loss of vacuum??? Any other ideas? Thanks guys!
 

Sounds like it. The actuator for the dash light uses vacuum.
 
RE: 4wd won

you can check by dropping into 4lo and getting into some loose ground and see if the front tire spins when to "get on it..." - thats how i check mine if i dont trust its engaged (lost the light with my cable conversion...) - if not - consider doing the conversion - never trusted the vac. system and pulled a few "stock" jeeps out of sand at the beach when i lived in FL that had vac. failures - works great when it works but i prefer mechanical means... just my $.02
 
RE: workin

what's the install like for the mechanical conversion? does it simply go from the transfer case to the front diff? where can I get one?
 

YJ Windshield washer bottle

its a mechanical cable that moves the fork in the front axle instead of the vac. system.... this is what i (and many others) did - cost less than $20 and takes about 3hrs depending on motivation, beer consumption and spousal interruption....
http://home.earthlink.net/~stevenschreiber/cabledis.htm
works well but dont go cheap on the cable - mine bound up and is in perma lock position till i change it out...
 
RE: Pic from the weekend...

Although LVRockCrawler probly has a good system in place there is a professional kit also. It's called a 4x4 Posi-lok conversion. Same idea but comes with a whole new 4wheel drive motor. Costs $200 and is SUPPOSED to be easy. But I've learned that nothing is easy on my undercarriage. Thats the route I'm gonna go. I just need money first.
Mike
 

yea... i'll agree... but issues like $20 -vs- $200 will motivate you to try... mine is currently in perma-lock position till i get a new cable... but when all works its pretty simple, reliable and CHEAP!
 
The posilok is down to $160 most places.

You can easily get your 4wd indicator light to work after installing a posilok by leaving the single vacuum line hooked up (early models) or leaving the electrical connection hooked up (later models).
 
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