Okay guys all I want is a straight up answer. I have a 1990 jeep cherokee 4.0 with an aw4 with np231 and went to a junkyard and I found a renix jeep and I took the front driveshaft out. Bought it. And took it home an it doesn't fit. The front output yoke bolt holes do not match up with the driveshaft bolt holes but they seat together perfectly on the u- joint. Well then I thought maybe I can just go to the junkyard and take the front output yoke out of that jeep so I did, and the diameter of the shaft hole is bigger then mine. So what do I do? I need my 4x4 to work, one more thing: I was told by a lot of people that my transfer case had to be vacuum disconnect. But it's not, so what do i do? The measured yoke is mine out of my jeep, and the other is the driveshaft, the pic of the two yokes: mine is on the right and it also doesn't have the lip, on that is where the "vacuum disconnect" is suppose to be, what do I do?

 

What year was other xj and what transfer case was in it?

 

Vacuum disconnects round thing on passenger side of front axle. What gears does your 4x4 shifter show on console shifter ?

 

I don't know the exact year but it was renix so 87-90 and it was a np242 I believe cause I saw the full time option on the bezel. And it was also not vacuum disconnect

 

I've checked my axle and it has no vacuum disconnect. My bezel and my gate are np242 so I'm thinking somebody put a np231 in it before I got it

 

Go look here...

 

I did and there is an electric screw in plug and also the speedo cable coming off the right and the tag says new process 231 J

 

Ok pretty sure 242 yoke wont swap with 231s . Is you xj auto or 5 spped you can get a grand Cherokee front shaft that should swap right in . Year,motor and tranny are required to no its length.

 

1990 jeep cherokee laredo
4.0L
Aw4

 

look at chart find close size make sure its 231 . A 1/2 in or so either way wont really matter.

 

Chart?

 

ooppps sowry
http://www.myjeepxj.com/useful-information/front-drive-shaft-information

 

Looks like 1989 to 2001 xj automatic should bolt right up with 231...

 

So should I just go buy a 231 yoke?

 

You have on off your case already no ? the donor was a 242 correct ?