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Unread 01-07-2014, 05:46 PM   #1
caddynut
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auto wap

what is the difference between a 87 auto and a 91 auto

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Unread 01-07-2014, 09:06 PM   #2
Soldier905
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You will need to put down more information than to get a good answer .
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Unread 01-08-2014, 10:11 AM   #3
87MJTim
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What are the current engines and trans? (Trans: 3sp or 4sp?)

Those will effect the ability to swap.
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87 Comanche, 4.0, BA10/5, D44
84 CJ7, 4.2, T5
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Unread 01-08-2014, 07:39 PM   #4
Caish
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91 was the first year of the HO in a Cherokee did it ever make it into a Comanche?? .
The only automatic used on the 4.0L Comanche is a AW4 that I know of.
Now is the TCM module the same on a REnix and HO I have no idea.
But I'm betting they are the same.
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Unread 01-08-2014, 07:48 PM   #5
87MJTim
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AFAIK the only diffs between the MJ & XJ are behind the driver's seat. The engines/trans are the same for both for the years.
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87 Comanche, 4.0, BA10/5, D44
84 CJ7, 4.2, T5
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Unread 01-10-2014, 05:32 AM   #6
cruiser54
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Quote:
Originally Posted by caddynut View Post
what is the difference between a 87 auto and a 91 auto
Different output shafts and spline count.
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Quote:
Originally Posted by chris87xj View Post
If you own a Renix Jeep, you'll want to check this out. >

An index to over 25 write-ups can be found in Post #1.

Cruiser's Mostly Renix Tips
My Jeep Technical Photos

http://www.cherokeeforum.com/g/album/1725214
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Unread 01-10-2014, 05:34 AM   #7
cruiser54
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Quote:
Originally Posted by Caish View Post
91 was the first year of the HO in a Cherokee did it ever make it into a Comanche??

YES. .

The only automatic used on the 4.0L Comanche is a AW4 that I know of.

YES

Now is the TCM module the same on a REnix and HO I have no idea.

NOT

But I'm betting they are the same.
Ask Paradise about tCUs. He had a heck of a time and that ended up being the issue.
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Quote:
Originally Posted by chris87xj View Post
If you own a Renix Jeep, you'll want to check this out. >

An index to over 25 write-ups can be found in Post #1.

Cruiser's Mostly Renix Tips
My Jeep Technical Photos

http://www.cherokeeforum.com/g/album/1725214
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Unread 01-10-2014, 06:32 PM   #8
caddynut
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sorry 87 4.0 4spd auto 4x4 / 91 4.0 4spd auto 4x4
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Unread 01-10-2014, 06:38 PM   #9
cruiser54
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Quote:
Originally Posted by caddynut View Post
sorry 87 4.0 4spd auto 4x4 / 91 4.0 4spd auto 4x4
Spline count.
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Quote:
Originally Posted by chris87xj View Post
If you own a Renix Jeep, you'll want to check this out. >

An index to over 25 write-ups can be found in Post #1.

Cruiser's Mostly Renix Tips
My Jeep Technical Photos

http://www.cherokeeforum.com/g/album/1725214
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Unread 01-14-2014, 01:50 PM   #10
uberxj92
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Spline count and tcu and bell housing is a little shallower on the renix.
Just went thru this on my 92 xj. Put in a built fresh 90 aw4. Had to use the 92 bell. The 92 tcu won't work and the 90 tcu won't plug into the 92 harness. Had to gave the solenoids rewired.
The output spline count is less on the renix era. So you'll have tcase issues.
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