noob 4x4 question -
Sign Up   Today's Posts
User: Pass: Remember?
Advertise Here
Jeep Home Jeep Forum Jeep Classifieds Jeep Registry JeepSpace Jeep Reviews Jeep Gallery Jeep Clubs Jeep Groups Jeep Videos Jeep Events Jeep Articles
Go Back > Models > Jeep Cherokee & Comanche Forums > MJ Comanche Technical Forum > noob 4x4 question

FS: Wrangler RGB Multicolor Fog Light LEDs: Awesome EffectFS: 2007-2013 Jeep Wrangler "HALO" Angel Eye KitRockridge 4WD IS Taking Zone Offroad Suspension Lift Kits

Unread 02-01-2013, 06:09 PM   #1
Registered User
Join Date: Jan 2013
Location: wildwood, nj
Posts: 19
noob 4x4 question

so guys, how can i tll if my front drive is engaged? haven't had it off the pavement yet and don't wana do it on dry road. i have pulled the lever into all positions but can't tell if it's goin in. will the front shaft spin if in 2wd? if so, and the wheels aren't turning, what next? what is the cad and does my 87 2.5 have one? there is no light comming on the dash but bulb could be blown.

54bobby is offline   Reply With Quote
Unread 02-02-2013, 07:27 AM   #2
Registered User
1989 MJ Comanche 
Join Date: Jul 2011
Location: north bay/corbeil, ontario
Posts: 282
it should have the vacuum unit on right side front axle.. my 86 parts mj has it..

start it up put it in 4x4. shut it off and jack up the right front tire.. in 4x4 it'll only rock back n forth.. if it spins around the vacuum unit is not engaging the axle'll have to check the vacuum lines for leaks and the unit..
your tranfer case is a chain driven either 231 or 242-part-time/full-time..
mj40 is offline   Reply With Quote
Unread 02-02-2013, 11:23 AM   #3
Registered User
1995 ZJ 
Join Date: Jul 2012
Location: Phoenix, AZ
Posts: 3,484
put the whole thing up on jackstands, all tires off the ground. start it up and have someone sit in it and shift it into 4wd. if the front tires turn, then its working. you could just shift it yourself, but its a good idea to have someone sitting inside to cover the brakes, just in case it fals off the jackstands.
Reliability is relative
R.I.P. Ratmonkey
dnuccio is offline   Reply With Quote
Unread 02-04-2013, 06:04 PM   #4
Registered User
Join Date: Jan 2013
Location: wildwood, nj
Posts: 19
vacume line from cad to tc was off. all fixed now.
54bobby is offline   Reply With Quote
Unread 02-13-2013, 10:01 AM   #5
Registered User
1988 MJ Comanche 
Join Date: Dec 2012
Location: napa, ca
Posts: 78
what you can do on the fly is when on pavement engage it and make a hard right turn, if it is engaged the inside tire should hop.
Hitman72 is offline   Reply With Quote

Jeep, Wrangler, Cherokee, Grand Cherokee, and other models are copyrighted and trademarked to Jeep/Chrysler Corporation. is not in any way associated with Jeep or the Chrysler Corp.