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Old July 28th, 2010, 12:09
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anthrax323 anthrax323 is offline
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AW4 gear selection - 2nd gear?

Hey guys,

I've noticed something peculiar about the AW4 in my 2001 XJ... For some reason, when in the "1-2" position, it will *NEVER* go into 2nd gear. I've taken it to redline in first, as the manual implies that it will shift automatically to 2nd "as needed", however, it never shifted into 2nd. I've tried to drop it into the "1-2" position from 3 (drive) at about 35 MPH, and it dropped all the way to first gear which has made me reluctant to try again at a higher speed.

Anyone have any tips on this? On many grades, 2nd gear would be extremely nice to be able to use as first is too low and third/drive is too high.

Campbell
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Old July 28th, 2010, 12:25
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kastein kastein is offline
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Re: AW4 gear selection - 2nd gear?

It *should* go into 2nd at 3500 or 4500rpm, I forget which.

I would suggest a Montana Fab 2nd gear override switch kit, since you have a late model you'll get a check engine light otherwise.
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Old July 28th, 2010, 13:57
joe_peters joe_peters is offline
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Re: AW4 gear selection - 2nd gear?

Quote:
Originally Posted by kastein View Post
It *should* go into 2nd at 3500 or 4500rpm, I forget which.

I would suggest a Montana Fab 2nd gear override switch kit, since you have a late model you'll get a check engine light otherwise.
Agree, thinking 4500 rpm, and the Montana Fab is the only one that doesn't throw a code to my knowledge.
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Old July 28th, 2010, 18:35
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anthrax323 anthrax323 is offline
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Re: AW4 gear selection - 2nd gear?

Perfect, looks like a good solution. Thanks for the input guys!
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Old July 28th, 2010, 19:19
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Re: AW4 gear selection - 2nd gear?

The Montana Fab unit is great for long steep grades.
Here's my install thread, although my install is a little out of date. XJMike appended his install to this thread on page 3, post 42. He got the newer style unit.

http://www.naxja.org/forum/showthread.php?t=1010278

Might want to check out your transmission before getting the controller though. While it does rev pretty high, it should eventually shift into 2nd gear(consensus seems to be 40000-4500RPM) In my own experience, if you manually shift to 2nd, it should drop to second, then downshift to 1st between 20-25 mph.

What's that stupid cable adjustment next to the TB that can cause the trans to act funky if it's set wrong? Somebody remember the name of it for me, and if it affects the 1-2 shift?
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Old July 28th, 2010, 19:32
american_zero american_zero is offline
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Re: AW4 gear selection - 2nd gear?

I believe that's the detent cable on the TB. I would adjust that and try again before adding any switches -- although having it switched will be nice.
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Old July 28th, 2010, 21:00
joe_peters joe_peters is offline
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Re: AW4 gear selection - 2nd gear?

The throttle pressure cable: http://naxja.org/forum/showthread.php?t=1015963
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Old July 28th, 2010, 21:11
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Johnnie Walker Johnnie Walker is offline
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Re: AW4 gear selection - 2nd gear?

x2 with Joe. And around 45 or so, especially because of the computer limiting the rpm's Should be alright shifting into the 1-2 selection and getting 2nd gear. Another thing you may want to do. Is get codes read and see if there is anything there, that for some reason may not trip the CEL. Maybe your TCU is fubar'd enough that 2nd gear is never there.
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Old July 29th, 2010, 08:45
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Re: AW4 gear selection - 2nd gear?

Thanks for the input. I did a quick test yesterday and did confirm the tranny will hit 2nd once I hit 4500 RPM, so it is working properly (I was apparently impatient last time I tried and gave up around 4k). Since I'd never gotten it into 2nd before, I've been wary of downshifting from 3rd but I'll do some testing.

At least I know it's working as intended, and that the override kit may be the most ideal solution. Next time I'm on a long grade, I'll be sure to push the engine to 4500 RPM and let it settle into 2nd. Thanks again!
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