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  #601  
Old November 11th, 2018, 08:37
lawsoncl lawsoncl is offline
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Re: Everything you ever wanted to know about the AW4

Quote:
Originally Posted by Bherm800 View Post
I got a question. So I have a 95 242 that was mated to a aw4 from same year. I'm trying to convert a 2000 2wd to 4wd. I bought the newer 99 trans because of electronics but now the tcase is the problem. The sensor on the 95 is different from the one on the 99. Can I just change the gear or pickup deal from the output shaft? As long as splines are good will this work or do I need to find a tcase from a 99-01

So you're putting a 99 AW4 auto and 95 242 xfer case into a 2000 XJ, right?



The 95 xfer case should bolt right up. The NP242J was basically unchanged for the entire run of the XJ. The spline count and length should match up between a 95 and 99 as well. If the output speed sensor is different, you should be able to swap that over.
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  #602  
Old November 11th, 2018, 13:24
Bherm800 Bherm800 is offline
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Re: Everything you ever wanted to know about the AW4

Correct. I found the wire color crossovers so have that done. Now it's the one in the adapter left. It had a 3 wire plug but only 2 wires in it. Have the one from the 99 has a blue end on it. Can I just wire these together aswell. Haven't found color crossover for that one yet.
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  #603  
Old November 11th, 2018, 14:42
lawsoncl lawsoncl is offline
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Re: Everything you ever wanted to know about the AW4

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Originally Posted by Bherm800 View Post
Correct. I found the wire color crossovers so have that done. Now it's the one in the adapter left. It had a 3 wire plug but only 2 wires in it. Have the one from the 99 has a blue end on it. Can I just wire these together aswell. Haven't found color crossover for that one yet.

You're talking about the tailcone of the xfer case? You should be able to unbolt the whole sensor and swap between the 95 and 99.

https://www.youtube.com/watch?v=W7lxHA7VCeI
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  #604  
Old November 11th, 2018, 20:50
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kastein kastein is offline
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Re: Everything you ever wanted to know about the AW4

What lawsoncl said.

Only thing I have to add is that the 95 tcase will have the older wet slip yoke design while your 00 would have the dry style. So you will need a rear driveshaft from a 91-95 with 4.0, aw4, 4wd, and the same rear diff as your Jeep. Or possibly swap a wet slip yoke onto a driveshaft from a 4.0, aw4, 4wd 96-01 with the same rear diff as yours, but I've not verified that that will be the right length.
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My yard looks like Sanford & Sons.
Please do not PM me about the AW4 info thread unless you have a truly unique question that is not covered by it or info to add. I do not respond to questions answered by the thread.
Definitely do not hunt down my phone number at 3AM, text me about it, and then threaten violence when I am not helpful. It will not get you what you want.
CTeunuch: Sometimes I really wonder if this sport makes you insane, or it just attracts the mentally unstable.
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  #605  
Old November 15th, 2018, 13:02
Gentlemen Jeep Gentlemen Jeep is offline
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Re: Everything you ever wanted to know about the AW4

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Originally Posted by WebDog View Post
Dex / Merc III
How much?
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  #606  
Old November 15th, 2018, 15:37
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kastein kastein is offline
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Re: Everything you ever wanted to know about the AW4

Until it's full

I think it is around 12 quarts (or was it 12 pints?) but I'm not sure. I keep a gallon jug on hand and buy another anytime I'm gonna drop the pan on one, so it's never been an issue. The FSM probably contains this info if you want to verify my number... please do, I can't remember if it's correct.
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My yard looks like Sanford & Sons.
Please do not PM me about the AW4 info thread unless you have a truly unique question that is not covered by it or info to add. I do not respond to questions answered by the thread.
Definitely do not hunt down my phone number at 3AM, text me about it, and then threaten violence when I am not helpful. It will not get you what you want.
CTeunuch: Sometimes I really wonder if this sport makes you insane, or it just attracts the mentally unstable.
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  #607  
Old November 16th, 2018, 19:17
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devildog0 devildog0 is offline
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Everything you ever wanted to know about the AW4

I think a drain and fill is around a gallon.

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1995 XJ Country/4.0L/AW4/231/UpCountry Suspension
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  #608  
Old January 10th, 2019, 15:37
soyjer soyjer is offline
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Re: Everything you ever wanted to know about the AW4

My otherwise completely stock, never off-road, 1999 4x4 XJ's transmission ID plate, which is BLUE in color, says:
Aisin AW
(model): 30-40E
(date code):03HR

Does that date code mean that it has an '03 transmission in it?

The XJ only has 98K miles on it, none of it off-road, but I suppose it is not IMPOSSIBLE that a previous owner could have received a defective (97K seems like premature failure) original transmission from the factory, and had to replace it sometime after 2003.

It has the throttle-control cable to control line pressure, and is coupled to a 231 transfer case.

It also has an apparently VERY rare malady: When shifting, with vehicle sitting still, from P/R/N into D/3/1-2, the engagement is EXTREMELY harsh, whereas when shifting into R engagement is NOT harsh, and otherwise the transmission shifts smoothly up and down through all gears.

I did noticed from studying the hydraulic flow diagrams that when the transmission is shifted, standing still, from P/R/N into D/3/1-2 (into 1st Gear), NO accumulators are used to cushion the harshness of the shift, whereas when shifted into R the C2 accumulator IS used, so perhaps the problem is occurring in R, also, but it just isn't noticeable because the C2 accumulator is absorbing the harshness of the shift into R.

The above problem exists even with the throttle line pressure control cable completely disconnected, and so far the transmission shop has replaced the complete valve body and torque converter, and a shift kit was installed and then removed (not sure why he did that), and the transmission was completely rebuilt. The transmission shop was so stymied by all of this not solving the problem that after having it in their shop for 9 weeks they didn't charge me anything because they said that they don't charge if they can't fix the problem! His only advice was to replace the transmission, because he had run out of things to try to fix the problem on this transmission. He said he was going to even try replacing the CASE of the transmission, but it is unclear that he actually tried that.
I had another shop look at the complete drivetrain (motor/tranny mounts, drive shafts, transfer case, differential, etc.) and they were also convinced that it HAS to be the transmission. So was another experienced dealer-trained Jeep mechanic that had been around XJ's a LOT, so should recognize whether it is the transmission or not that is the problem.

At this point my options seem to be:
1. Drive it like it is until the harsh engagement breaks something else in the transmission.
2. Figure out a way to temporarily reduce the line pressure JUST for those manual shifts at a standstill into D/3/1-2 (hard to do, since even completely disconnecting the throttle line pressure control cable doesn't help).
3. Replace the transmission.
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  #609  
Old January 10th, 2019, 15:44
soyjer soyjer is offline
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Re: Everything you ever wanted to know about the AW4

Oops, transmission model number is actually 30-40LE (I left out the "L")
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  #610  
Old January 10th, 2019, 18:09
soyjer soyjer is offline
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Re: Everything you ever wanted to know about the AW4

TPS is also OK (.5 volts - 4.0 volts, smooth transition)
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