AW-4 output Spline

JeepCherokeeGuy99 · Feb 21, 2009

I'm swapping my AW-4 out of my 97 and putting one from a 94 in tomorrow. I'm worried about the spline count. I'm not sure if the 97 was 23 or 21. Anyone know if im going to have a problem matching up my 94 tranny to the 97 t-case? thanks

JeepCherokeeGuy99 · Feb 21, 2009

k i realized they are both 23 spline. changed from 21 in 1991 for the HO 4.0 however, In 1996, the AW4 transmission added a front input speed sensor and the rear speed sensor changed from a 1-pulse/rev reed sensor to a 4-pulse/rev magnetic sensor. which means i would need the same wiring harness and computer right?

5-90 · Feb 21, 2009

Jeepcherokeeboy97 said:
k i realized they are both 23 spline. changed from 21 in 1991 for the HO 4.0 however, In 1996, the AW4 transmission added a front input speed sensor and the rear speed sensor changed from a 1-pulse/rev reed sensor to a 4-pulse/rev magnetic sensor. which means i would need the same wiring harness and computer right?

You can probably swap the speed sensor rotor - it's in the transfer case adapter housing. There's a snapring that retains it to the shaft, and I believe it's located using a Woodruff key.

lawsoncl · Feb 21, 2009

I think the change was actually in 98, as the wiring schematic doesn't show the additional front sensor until then. Should be easy enough to stick your head under the 97 and look if there is a front speed sensor, right? The picture of the speed sensor rotor in the 96 FSM also only shows 1 lobe. I think it should be a straight swap.

JeepCherokeeGuy99 · Feb 21, 2009

lawsoncl said:
I think the change was actually in 98, as the wiring schematic doesn't show the additional front sensor until then. Should be easy enough to stick your head under the 97 and look if there is a front speed sensor, right? The picture of the speed sensor rotor in the 96 FSM also only shows 1 lobe. I think it should be a straight swap.

well ill just have to wait tomorrow morning and see. I'll keep you posted on whether or not it was a smooth swap. Thanks again

-Nick

AW-4 output Spline

JeepCherokeeGuy99

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5-90

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lawsoncl

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