XJ engine/tranny into YJ - JeepForum.com
Search  
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 JeepForum.com > Models > Jeep Wrangler Forums > YJ Wrangler Technical Forum > XJ engine/tranny into YJ

Rough Country Jeep Suspension Deals at Rockridge 4WD!Looking to re-gear?! CRAZY DEALS ON YUKON GEARS right hereJK specific skid plates from Clayton Off Road Mfg.

Reply
Unread 08-29-2013, 05:53 AM   #1
Jdawg319
Registered User
1993 YJ Wrangler 
 
Join Date: Jan 2011
Location: Waterloo, IA
Posts: 7
XJ engine/tranny into YJ

Ok i have a 93 wrangler renegade with a 4.0/ax-15/231. I would like to switch it to an automatic and really like the AW4. I was wondering what way would be easiest to achieve that. If i bought an xj engine/tranny with all wiring harnesses would it be easy that way? What all would i need?

Jdawg319 is offline   Reply With Quote
Unread 08-29-2013, 08:51 AM   #2
SeanB95YJ
Web Wheeler
 
SeanB95YJ's Avatar
1995 YJ Wrangler 
 
Join Date: Nov 2009
Location: Schenectady, New York
Posts: 1,130
it depends on what year the AW-4 is from... I've been away from XJs for a long time so a lot has slipped my mind, but earlier years the trans had it's own computer that could be used as stand-alone. at some point (don't remember which year) they changed to where everything was off just the one computer.

if the donor is of the newer variety, I'd imagine you could swap over just the trans (keeping your current 4.0) and then bring the harness and ECU over to your YJ along with the trans
__________________
Sean B. - Schenectady, NY - 95 YJ, 350/700r4/NP241, JB Shorty SYE, 8.8 rear, 2" BDS, 1" homebrew shackles, Daystar 1" BL, TJ flares, 35x12.50 General Grabber AT2 on 15x10 Bart D-Truckers, Polyshield polycarbonate windshield, HD over/under crossover steering
swap/build thread: http://www.jeepforum.com/forum/f22/a...hread-1542284/
SeanB95YJ is offline   Reply With Quote
Unread 08-29-2013, 12:34 PM   #3
remmons
Senior moments member.
2002 KJ Liberty 
 
Join Date: Mar 2010
Location: Vernal, Utah
Posts: 1,228
Please don't hold me to this, but I believe that the TCM is integrated into the PCM somewhere in 1996....but I could be wrong. The 87-90 XJ has a different TCM and connector than that from 1991-1995. When I had adapted my XJ AW4 auto into my 1988 YJ I had to replace my TCM, and that one from the early 90's wouldn't fit the connector that was in the late 80's.

Hopefully this helps, and hopefully someone chimes in who has a little more knowledge who can verify my above statement.
__________________
2002 Liberty Sport 3.7. 2.5" lift. Mostly all stock.
remmons is offline   Reply With Quote




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