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jeep yj trans swap

how big a deal is it to go from a 5 speed behind a 4.0 in a 94 yj to a auto

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It depends if you want to shift it manually it not. I swapped one into my Jeep using the RAdesigns Winters shifter and it was cake. I used a Cherokee flexplate, starter, and TC. My swap was on a 4.2. I imagine the swap on a 4.0 would be the same or easier.

If you want it to shift like a normal auto, there's a bit of wiring involved to splice the tcu into the harness.
 
you ancered my question i was hopeing i could get one from a xj and make it manual what you sayind is i can run a basic shifter and will it up shiftand down shift with out hooking up wireing are they 4 speed autos they dont reli on the cable to shift like a 700r4 doess do they
 
tennessee_4x4_man said:
you ancered my question i was hopeing i could get one from a xj and make it manual what you sayind is i can run a basic shifter and will it up shiftand down shift with out hooking up wireing are they 4 speed autos they dont reli on the cable to shift like a 700r4 doess do they
Click to expand...

They use eletric solenoids to do all the up-down shifting.

If you buy a kit from Radesigns, it has a wiring harness that hooks to the trans and switches are built into the shifter.

you have to have a shifter to shift the linkage from Park - R - N - D , then the electronics make it shift gears 1-2-3-4



I had a Toyota with a AW4 from a Cherokee in it, it had 2 shifters. The stock Jeep shifter hooked to the linkage, and then an 4 position electric switch shifter from an arcade game (like Crusin USA) mounted right behind the Jeep shifter to control 1-2-3-4 shifts.

You could shift to R from any gear, and it was fully manual, what ever gear the arcade game shifter was in, is what gear it would start/stay in.
 
I did mine about this time last year. The RADdesign is worth the cost. Great customer service also. I think it was 4 wires...maybe 3. Anyway, super easy and worth the time.
 
found a guy has this Aw4 transmission 174000 miles. $150 and hes got this also Rad designs aw4 override shifter new. $100 is this the same trans they use in auto yj and tj will this work for me
 
tennessee_4x4_man said:
found a guy has this Aw4 transmission 174000 miles. $150 and hes got this also Rad designs aw4 override shifter new. $100 is this the same trans they use in auto yj and tj will this work for me
Click to expand...

The AW4 came in Cherokees.

But yes it will work in a YJ
 
i hurd some where the factroy was like a tf999 like 22.5 long and the aw4 is 25.5 wich i can make work cause i streching rear axel
nick send me your number i cant find it
 
731 694 5936

I don't know nuthin about jeep transmissions though haha

muddycreek probably knows more about what you are wanting to do
 
ok i need muddys number what about runing the tf999 they were stock from 91 to 95 there a 3 speed auto are they simpler to hook up
 
muddy you are the man i just got a trans ans case from a 96 xj one guy said that was a funcky year that had a tcm had to be wired in factroy pcm to make it work i need a little help on how to wire up the 96 xj trans where it will up shift and down shift with the cpu
 

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