XJ engine/tranny into YJ - JeepForum.com
 
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post #1 of 3 Old 08-29-2013, 05:53 AM Thread Starter
Jdawg319
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1993 YJ Wrangler 
 
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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?

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post #2 of 3 Old 08-29-2013, 08:51 AM
SeanB95YJ
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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/
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post #3 of 3 Old 08-29-2013, 12:34 PM
remmons
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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.

Robert.

2015 Cherokee Trailhawk V6.
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aw4 , engine swap wiring , transmission swap

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