1989 jeep cherokee driveline spins but front diff wont engage
12-17-2019, 09:27 AM
#1
Newbie
Thread Starter
Join Date: Dec 2019
Posts: 3
Likes: 0
Received 0 Likes
on
0 Posts
Model: Cherokee (XJ)
1989 jeep cherokee driveline spins but front diff wont engage
I changed my front actuator and actuator on tcase but front diff wont engage. Light comes on and off like it suppose to. Even feel like it engages but front wheels dont spin any ideas?
12-17-2019, 12:28 PM
#3
Newbie
Join Date: Oct 2017
Location: Montana
Posts: 18
Likes: 0
Received 2 Likes
on
2 Posts
Year: 1988
Model: Cherokee (XJ)
Engine: 4.0L
The '89 still has the vacuum disconnect front axle, a quick bypass of the disconnect will let you know if the issue is with any of the vacuum lines. Many leave it permanently bypassed (I did on my '88 after the vacuum lines disintegrated). See: https://www.cherokeeforum.com/f51/fr...ss-91-a-38629/
12-17-2019, 03:36 PM
#4
Newbie
Thread Starter
Join Date: Dec 2019
Posts: 3
Likes: 0
Received 0 Likes
on
0 Posts
Model: Cherokee (XJ)
12-17-2019, 03:42 PM
#5
Newbie
Thread Starter
Join Date: Dec 2019
Posts: 3
Likes: 0
Received 0 Likes
on
0 Posts
Model: Cherokee (XJ)
12-18-2019, 07:01 AM
#7
::CF Moderator::
Join Date: Aug 2011
Location: Prescott, Az
Posts: 43,971
Received 1,559 Likes
on
1,263 Posts
Year: 1990
Model: Cherokee (XJ)
Engine: 4.0
Just bypass it and don't look back. Here's how and why.
https://comancheclub.com/topic/17377-cad-fix-1/
CAD STINKS
The big issue is that the CAD system only fails when you need it the most.
Kinda like when you don't realize your wiper blades need replacing until it rains....
I know somebody’s system works and he advocates keeping it stock, but my exposure to the failures is probably hundreds of times greater than his, as a result of being Service Manager at a Jeep dealership from 1980 through 1992, and being a current XJ and MJ owner.
CAD stinks. Every Jeep I work on with it, I eliminate it. Guess what I find in the process? 25 year old busted vacuum lines, bloated vacuum line connectors, bad vacuum reservoirs and piping, bad transfer case vacuum switches. In other words, had the person gotten into a sticky situation and needed 4WD, they would have been screwed!!!
That's the tip of the iceberg. The factory went through 3 revisions of the shift fork also. The fork issue is non-existent if you just slide it over and leave it.
See the link below for complete instructions. Takes less than 1/2 hour.
https://www.cherokeeforum.com/f51/fre...ss-91-a-38629/
,
https://comancheclub.com/topic/17377-cad-fix-1/
CAD STINKS
The big issue is that the CAD system only fails when you need it the most.
Kinda like when you don't realize your wiper blades need replacing until it rains....
I know somebody’s system works and he advocates keeping it stock, but my exposure to the failures is probably hundreds of times greater than his, as a result of being Service Manager at a Jeep dealership from 1980 through 1992, and being a current XJ and MJ owner.
CAD stinks. Every Jeep I work on with it, I eliminate it. Guess what I find in the process? 25 year old busted vacuum lines, bloated vacuum line connectors, bad vacuum reservoirs and piping, bad transfer case vacuum switches. In other words, had the person gotten into a sticky situation and needed 4WD, they would have been screwed!!!
That's the tip of the iceberg. The factory went through 3 revisions of the shift fork also. The fork issue is non-existent if you just slide it over and leave it.
See the link below for complete instructions. Takes less than 1/2 hour.
https://www.cherokeeforum.com/f51/fre...ss-91-a-38629/
,
The following users liked this post:
PatHenry (12-18-2019)
Thread
Thread Starter
Forum
Replies
Last Post
lualchro
Stock XJ Cherokee Tech. All XJ Non-modified/stock questions go here
4
01-14-2013 07:24 AM
blazer 2008
Stock XJ Cherokee Tech. All XJ Non-modified/stock questions go here
3
12-17-2012 05:42 PM
Mountain
Other Vehicles. Other Jeep models & cars and trucks of other makes
1
05-01-2011 07:57 AM
88GTBlack
Stock XJ Cherokee Tech. All XJ Non-modified/stock questions go here
15
02-23-2010 11:42 PM
88GTBlack
Stock XJ Cherokee Tech. All XJ Non-modified/stock questions go here
2
02-21-2010 02:03 PM
Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)