Root Moose
NAXJA Forum User
- Location
- ON, Canada
Hopefully another useful thread for the archives/search similar to the NV242 thread. My attempt to give something back to the forum for all the great info I lurk here: consolidated info.
What I know about the AW4:
Here is the manual/FSM for the earlier variants of the AW4:
Here is a wiring diagram for a 1989 AW4 (originated from wagoneers.com, linked from my site to save them bandwidth):
The following links deal with modifying the shifting of the AW4 into a full manual transmission. I guess technically it would be a "semi-automatic" like an old VW Beetle since it doesn't have a clutch.
Anyway, here are the links:
Also, a couple of simpler (yeah, right!), cool mods by member "GoJeep":
Please add, correct, modify any of this information as you see appropriate.
r@m
What I know about the AW4:
- 4 speed automatic, overdrive transmission
- Ratios: 2.80, 1.53, 1.00, 0.75
- Strong, reliable tranmission
- 250,000 mi (400,000 km) between rebuilds not unheard of (!!)
- Toyota version (A340) lives behind modded turbo 6 cylinder Supras
- Smaller than GM 700R4/4L60(E)
- Quite low first gear ratio (2.80:1)
- GM TH700R4/4L60(E) is 3.06:1
- GM TH350 is 2.52:1
- GM TH400 is 2.48:1
- Jeep/ChryCo TF727 is 2.45:1
- moderate overdrive/4th ratio (0.75:1)
- GM 700R4 is 0.7:1
- Has torque converter clutch
- Uses standard New Venture (NV; ex-New Process) series transfer case bolt pattern
- 1989 (inclusive) and earlier are 21 spline output (is this correct?)
- 1990+ are 23 spline
- compatible spline count with other t-cases like Dana 300
- 1996 and earlier variants use a TCU/ECU separate from the engine ECU
- 1997+ variants use a TCU/ECU that is integrated with the engine ECU
Here is the manual/FSM for the earlier variants of the AW4:
Here is a wiring diagram for a 1989 AW4 (originated from wagoneers.com, linked from my site to save them bandwidth):
The following links deal with modifying the shifting of the AW4 into a full manual transmission. I guess technically it would be a "semi-automatic" like an old VW Beetle since it doesn't have a clutch.
Anyway, here are the links:
Also, a couple of simpler (yeah, right!), cool mods by member "GoJeep":
Please add, correct, modify any of this information as you see appropriate.
r@m
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