texasjack Posted March 31, 2017 Share Posted March 31, 2017 What years automatic 2 wheel drive 6 cylinder will work in a 1990 Commanche? HELP! Thank you Texasjack Link to comment Share on other sites More sharing options...
omega_rugal Posted March 31, 2017 Share Posted March 31, 2017 AW4.... Link to comment Share on other sites More sharing options...
Green Mesa XJ Posted March 31, 2017 Share Posted March 31, 2017 Mj & XJ aw4 automatic transmission 87-90 are a direct fit , but just about any 2wd AW4 transmission might work. Internally they are almost identical with differences through various years in plugs and maybe driveshafts. Sent from my iPhone using Tapatalk Pro Link to comment Share on other sites More sharing options...
ScottJeep Posted April 2, 2017 Share Posted April 2, 2017 http://www.naxja.org/forum/showthread.php?t=1053970 Link to comment Share on other sites More sharing options...
HOrnbrod Posted April 2, 2017 Share Posted April 2, 2017 1990 was the first year for the 23 spline output AW4, so a 90-97 2WD AW4 would be the easiest replacements. There are some wiring pinout differences to the TCU throughout the years, but with the wiring diagrams these are easy get right. Link to comment Share on other sites More sharing options...
texasjack Posted April 2, 2017 Author Share Posted April 2, 2017 Thank Y'all for the help. I discovered the problem was a frayed kickdown cable. Texasjack Link to comment Share on other sites More sharing options...
cruiser54 Posted April 2, 2017 Share Posted April 2, 2017 1990 was the first year for the 23 spline output AW4, so a 90-97 2WD AW4 would be the easiest replacements. There are some wiring pinout differences to the TCU throughout the years, but with the wiring diagrams these are easy get right. I thought it was 91 and coincided with the release of the HO..... Link to comment Share on other sites More sharing options...
HOrnbrod Posted April 2, 2017 Share Posted April 2, 2017 OP was asking about 2WD transmissions. EDIT: But I did screw up. The AW4 2WD output spline count is 27, not 23. 23 is for the AW4 4WD output shafts, starting in 1991..... Link to comment Share on other sites More sharing options...
jpnjim Posted April 2, 2017 Share Posted April 2, 2017 OP was asking about 2WD transmissions. EDIT: But I did screw up. The AW4 2WD output spline count is 27, not 23. 23 is for the AW4 4WD output shafts, starting in 1991..... there was also an OD drive ratio change that went along with the 21-23 spline output change in (mid)1991 Don, are you thinking the 2wd got the ratio change in 1990 instead of 1991? Link to comment Share on other sites More sharing options...
cruiser54 Posted April 2, 2017 Share Posted April 2, 2017 OP was asking about 2WD transmissions. EDIT: But I did screw up. The AW4 2WD output spline count is 27, not 23. 23 is for the AW4 4WD output shafts, starting in 1991..... there was also an OD drive ratio change that went along with the 21-23 spline output change in (mid)1991 Don, are you thinking the 2wd got the ratio change in 1990 instead of 1991? Now I'm not sure Link to comment Share on other sites More sharing options...
HOrnbrod Posted April 2, 2017 Share Posted April 2, 2017 I looked in the parts manuals and the AW4 2WD output shaft was the same p/n from 87-01. So 27 spline output shafts for all. The O/D ratio change was in 91 I believe. Link to comment Share on other sites More sharing options...
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