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  #1  
Old July 22nd, 2019, 21:02
Alwaysdutch Alwaysdutch is offline
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‘96 AW4 in an ‘01 2WD

I read the details of the AW4 transmission, but I could not really find out if a ‘96 AW4 2WD transmission would fit a 2001 2WD XJ. Can I swap it or are there a bunch of modifications?
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  #2  
Old July 22nd, 2019, 21:11
lawsoncl lawsoncl is offline
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Re: ‘96 AW4 in an ‘01 2WD

It will bolt up, but it's not going to shift correctly with the 2001 electronics.

Start here https://www.naxja.org/forum/showthread.php?t=1053970
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  #3  
Old July 22nd, 2019, 22:21
Alwaysdutch Alwaysdutch is offline
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Re: ‘96 AW4 in an ‘01 2WD

Yeah, that’s the thread I went through and had a hard time figuring out if a 2wd would make any difference. Back to the drawing board. If anyone has a good 2wd tranny is located around ATL, let me know.
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  #4  
Old July 22nd, 2019, 23:36
lawsoncl lawsoncl is offline
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Re: ‘96 AW4 in an ‘01 2WD

What's the issue with your AW4? The vast majority of the problems are electronic and not mechanical.
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  #5  
Old July 23rd, 2019, 04:58
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Re: ‘96 AW4 in an ‘01 2WD

2wd to 2wd should not change anything about the listed compatibilities. 1996 AW-4 will not go into a 2001 XJ without lots of extra work.
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Last edited by Tim_MN; July 24th, 2019 at 08:12.
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  #6  
Old July 23rd, 2019, 14:29
Alwaysdutch Alwaysdutch is offline
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Re: ‘96 AW4 in an ‘01 2WD

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Originally Posted by lawsoncl View Post
What's the issue with your AW4? The vast majority of the problems are electronic and not mechanical.
My current AW4 has broken bolts while taking the cone off to replace the speed sensor wheel on the shaft. I found a 96 AW4 but mine is a2001. The seller told me he had done it before without issues, but I wanted to make sure.
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  #7  
Old July 23rd, 2019, 15:01
RCP Phx RCP Phx is offline
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Re: ‘96 AW4 in an ‘01 2WD

You might want to elaborate and/or take pics. Bolts and studs can easily be replaced?
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  #8  
Old July 23rd, 2019, 16:13
Alwaysdutch Alwaysdutch is offline
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Re: ‘96 AW4 in an ‘01 2WD

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Originally Posted by RCP Phx View Post
You might want to elaborate and/or take pics. Bolts and studs can easily be replaced?
Not really. Four top bolts broke off and I am unsure if it can be drilled out. I figured it is easier and faster the swap the transmission
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  #9  
Old July 24th, 2019, 09:54
Alwaysdutch Alwaysdutch is offline
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Re: ‘96 AW4 in an ‘01 2WD

This write-up does not attempt to cover the 2wd editions of the AW4 as thoroughly as the 4wd. The major difference is the addition of another year split - 1995 and earlier 2WD AW4s will have the old style slip yoke and output seal while 1996 and later 2WD AW4s will have the new style slip yoke and output seal, as well as dust slinger. The vehicle speed sensor is also located in the transmission tailhousing. A 2wd AW4 cannot be converted to a 4WD unit without full disassembly as the output shaft is a different length, has 27 splines (to match the slip yoke used on the rear output of 4WD XJ transfer cases) rather than 21 or 23 splines, and includes the 13 tooth worm gear for the VSS or speedo takeoff which would otherwise be in the tailcone of the transfer case.

So if I read this correctly, a '96 2WD tranny would have no issues in an '01 XJ? It says nothing about PCM issues and such.
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  #10  
Old July 24th, 2019, 12:12
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Re: ‘96 AW4 in an ‘01 2WD

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Originally Posted by Alwaysdutch View Post
This write-up does not attempt to cover the 2wd editions of the AW4 as thoroughly as the 4wd. The major difference is the addition of another year split - 1995 and earlier 2WD AW4s will have the old style slip yoke and output seal while 1996 and later 2WD AW4s will have the new style slip yoke and output seal, as well as dust slinger. The vehicle speed sensor is also located in the transmission tailhousing. A 2wd AW4 cannot be converted to a 4WD unit without full disassembly as the output shaft is a different length, has 27 splines (to match the slip yoke used on the rear output of 4WD XJ transfer cases) rather than 21 or 23 splines, and includes the 13 tooth worm gear for the VSS or speedo takeoff which would otherwise be in the tailcone of the transfer case.

So if I read this correctly, a '96 2WD tranny would have no issues in an '01 XJ? It says nothing about PCM issues and such.
The 96 has a different output speed sensor signal than the 98+ transmissions and the 96 is also missing the input speed sensor the 98+ transmissions have. So physically, it would bolt up, but electrically it wouldn't work unless you bastardized a 97 TCM into your jeep.
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  #11  
Old July 25th, 2019, 11:23
Alwaysdutch Alwaysdutch is offline
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Re: ‘96 AW4 in an ‘01 2WD

What if I find a '97 2WD transmission? Does that create electrical/TCM issues?
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  #12  
Old July 25th, 2019, 12:33
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Re: ‘96 AW4 in an ‘01 2WD

You need a 98 or newer transmission. 2WD or 4WD does not matter, the transmission does not even know if it is 4x4 or not.
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  #13  
Old July 25th, 2019, 23:52
Heavyopp Heavyopp is offline
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Re: ‘96 AW4 in an ‘01 2WD

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Originally Posted by cal View Post
2WD or 4WD does not matter, the transmission does not even know if it is 4x4 or not.
I don’t believe this is true — I have a 2wd 96 — I cannot simply add a transfer case to my 2wd transmission to make it 4wd

From what I understand 2wd transmissions are physically different than 4wd transmissions
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  #14  
Old July 26th, 2019, 05:35
RCP Phx RCP Phx is offline
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Re: ‘96 AW4 in an ‘01 2WD

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Originally Posted by Heavyopp View Post
I don’t believe this is true — I have a 2wd 96 — I cannot simply add a transfer case to my 2wd transmission to make it 4wd

From what I understand 2wd transmissions are physically different than 4wd transmissions
It's not quite that simple but yes you could do it.

No, the trans is the same other than the tailshaft cone.
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  #15  
Old July 26th, 2019, 09:20
Heavyopp Heavyopp is offline
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Re: ‘96 AW4 in an ‘01 2WD

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Originally Posted by RCP Phx View Post
It's not quite that simple but yes you could do it.

No, the trans is the same other than the tailshaft cone.
I just re-read the beginning of the aw4 thread -- it seems the output shaft is different and would need to be swapped = total trans disassembly
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