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  Topic Review (Newest First)
04-07-2019 08:17 AM
mrblaine
Quote:
Originally Posted by mrblaine View Post
The swap is possible and easy relatively. Just not as cheap as it could be. You need the conversion bellhousing from Advance Adapters that has the CPS hole over on the right side. It will swap onto the NV3550 or AX-15 that you acquire. After that, there is no wiring, PCM swap, or anything else electrical that needs messed with. AA gives you a new throw-out bearing, clutch fork ball stud in the kit and a list of which parts to mix and match to get the clutch disc, pressure plate and pilot bearing all working. It is a very basic swap and no harder than doing a clutch job.
Quote:
Originally Posted by Bruce06Unltd View Post
I think I need the adapter with the AX15 to set up the CPS right. This thread is about swapping and auto for manual tranny. Sorry if I got it off course, but I can't find anything about swapping the NGS370 to an AX15 in an '06. The bell housings are obviously different, it seems.

As stated previous, it is not an adapter, it is a conversion bellhousing. You remove the bellhousing from the AX-15 and replace it with the one from AA.

https://www.advanceadapters.com/prod...o-40l-engines/
04-07-2019 06:58 AM
Bruce06Unltd I think I need the adapter with the AX15 to set up the CPS right. This thread is about swapping and auto for manual tranny. Sorry if I got it off course, but I can't find anything about swapping the NGS370 to an AX15 in an '06. The bell housings are obviously different, it seems.
04-05-2019 09:55 AM
TheFreedombird
Quote:
Originally Posted by Bruce06Unltd View Post
Quote:
Originally Posted by mukluk View Post
Most likely the reverse shift fork has been bent or broken, a common issue with the NSG370 if a person accidentally tries to shift into reverse while the vehicle is moving forward. Where reverse is located in the shift pattern near sixth gear makes this easy to do.
I know how easy that is to do when shifting from 4th to 6th which is usually at high speeds, to make it worse. This blew right after a start from a dead stop (oops, is did squeal the rear tires on dry pavement, but it was an uphill start at an intersection) and went through 2nd 3rd and 4th when it started to grind at about 30 mph. I was only a mile from home so I drove on with occasional noise, but realized I had no reverse when I went to back onto the driveway at home. I don't know if it would be cheaper fix the reverse gear when I am paying my shop $106 per hour labor. It has 160K miles on it, so I figured I would swap out the whole tranny and clutch while I am at it. I shuddered at the price of a new NGS370 and thought the AX15 would be cheaper, but with that adapter cost and labor, it works out about even.

Has anyone had a NGS370 rebuilt? I wonder what that would cost? Yikes and might as well replace the clutch too...might as well.[IMG class=inlineimg]/forum/images/JeepForum_2016/smilies/tango_face_sad.png[/IMG]
As far as swapping the transmission goes I don't know a whole lot about it. The ax15 that came from the 92 dakota blew up some bearing and I am moving at the end of the month so I ordered a remanned NV3550 and tossed that in there. Granted I didn't have to change anything up. Just needed a new shifter. With that I went with B&M Sports Short Throw. Does the NGS370 have a different style bell housing?
04-04-2019 09:20 AM
Bruce06Unltd Has anyone had a NGS370 rebuilt? I wonder what that would cost? Yikes and might as well replace the clutch too...might as well.
04-04-2019 09:20 AM
Bruce06Unltd
Quote:
Originally Posted by mukluk View Post
Most likely the reverse shift fork has been bent or broken, a common issue with the NSG370 if a person accidentally tries to shift into reverse while the vehicle is moving forward. Where reverse is located in the shift pattern near sixth gear makes this easy to do.
I know how easy that is to do when shifting from 4th to 6th which is usually at high speeds, to make it worse. This blew right after a start from a dead stop (oops, is did squeal the rear tires on dry pavement, but it was an uphill start at an intersection) and went through 2nd 3rd and 4th when it started to grind at about 30 mph. I was only a mile from home so I drove on with occasional noise, but realized I had no reverse when I went to back onto the driveway at home. I don't know if it would be cheaper fix the reverse gear when I am paying my shop $106 per hour labor. It has 160K miles on it, so I figured I would swap out the whole tranny and clutch while I am at it. I shuddered at the price of a new NGS370 and thought the AX15 would be cheaper, but with that adapter cost and labor, it works out about even.

Has anyone had a NGS370 rebuilt? I wonder what that would cost...and might as well replace the clutch too...might as well.
04-03-2019 02:13 PM
mukluk
Quote:
Originally Posted by Bruce06Unltd View Post
...my '06 Unlimited (NOT Rubicon) NSG370 just blew the reverse gear. Not sure what happened, but it makes a grinding sound going forward and won't go in reverse at all.
Most likely the reverse shift fork has been bent or broken, a common issue with the NSG370 if a person accidentally tries to shift into reverse while the vehicle is moving forward. Where reverse is located in the shift pattern near sixth gear makes this easy to do.
04-03-2019 12:21 PM
Jakegrovephoto
Auto to Manual Transmission Swap

Not to thread jack, but while the subject is up anyone know how the pcm functions with e-vin and mileage on an obdII as listed?

Could pull a proper pcm for my swap but afraid at smog time the Evin will be pulled up. Looks like tech authority and a pcm pass-thru setup could reflash the vin?
04-03-2019 10:58 AM
Jakegrovephoto
Quote:
Originally Posted by skjeep View Post
Not necesarily. Just take a plain automotive relay and wire its coil between ignition switched 12V and a TC control wire from PCM. The PCM will be happily switching the relay thinking it is a TC clutch
Done that many times when swapping an AW4 to TJ with 3speed tranny and keeping the stock PCM.

The wires you use are directly at the PCM


You can take the fused ignition switch 12V from the PCM plug 1 (black) - dark blue wire at cavity (pin) 2
and the TCC signal from the PCM plug 2 (white) - orange/light green wire at cavity (pin) 11
Just wire the coil side of a small automotive relay betwen the two. other contacts of relay remain unused.
After a GOOD isolation and waterproofing you can just zip tie the relay directly to the PCM harness


This!!!

I had been debating this in the back of my mind a while now for my aw4 to ax15 on a 00 xj. Hell I was going to keep the solenoids wired up and just make a little alum box to mount them in under the dash.

CEL is a big no go for ca smog [emoji854]

Solid build thread btw. Thanks for sharing!
04-03-2019 09:12 AM
mrblaine
Quote:
Originally Posted by Bruce06Unltd View Post
Thanks for a GREAT write up. I am glad I found this thread...my '06 Unlimited (NOT Rubicon) NSG370 just blew the reverse gear. Not sure what happened, but it makes a grinding sound going forward and won't go in reverse at all. I have 160K miles on it so I will replace the clutch while I am at it (might as well) so I will have some differences, but think it can be done easier. But still not sure how I can get the compatibility questions worked out....PCM, crankshaft sensor and other wiring is above my skill level, but if I can tell my garage how it is done, I think they can do it for me.

I anyone knows of a good write up on doing a NSG370 to AX15 swap, please let me know?

Bruce
The swap is possible and easy relatively. Just not as cheap as it could be. You need the conversion bellhousing from Advance Adapters that has the CPS hole over on the right side. It will swap onto the NV3550 or AX-15 that you acquire. After that, there is no wiring, PCM swap, or anything else electrical that needs messed with. AA gives you a new throw-out bearing, clutch fork ball stud in the kit and a list of which parts to mix and match to get the clutch disc, pressure plate and pilot bearing all working. It is a very basic swap and no harder than doing a clutch job.
04-03-2019 09:04 AM
mrblaine
Quote:
Originally Posted by TheFreedombird View Post
Thanks for the support Jerry. With the PCM if I snag one out of a TJ with a stock manual I have to make sure it already was SKIM. If it doesn't then that can cause problems. The PCM part I couldn't ever find solid research on besides the fact that I don't need to replace it unless I want it to clear the engine error.
All of the 98+ PCM's are SKIM capable. You will have to have the new PCM programmed to pair with your current SKIM module so it doesn't matter if the PCM you acquire is SKIM enabled or not.
04-03-2019 06:25 AM
Bruce06Unltd Thanks for a GREAT write up. I am glad I found this thread...my '06 Unlimited (NOT Rubicon) NSG370 just blew the reverse gear. Not sure what happened, but it makes a grinding sound going forward and won't go in reverse at all. I have 160K miles on it so I will replace the clutch while I am at it (might as well) so I will have some differences, but think it can be done easier. But still not sure how I can get the compatibility questions worked out....PCM, crankshaft sensor and other wiring is above my skill level, but if I can tell my garage how it is done, I think they can do it for me.

I anyone knows of a good write up on doing a NSG370 to AX15 swap, please let me know?

Bruce
01-26-2019 08:17 PM
Jerry Bransford PM me, I have a shifter and cable.
01-26-2019 08:04 PM
astjp2 Hey, do you want to sell the automatic shifter, cables and brackets off of the transmission? I want to swap from the 6 speed to a 999 auto...Tim
01-25-2019 12:55 PM
TheFreedombird @Ben , that was the whole reason I posted everything I did because all I was reading was just sell it and buy a manual. My jeep is my only vehicle and with the trans going out I wasn't willing to risk not getting the money for a manual.

@skjeep I will look into it in the next couple days. Right now I am just trying to make sure it is road trip ready because I am moving in april and don't want to mess with stuff that doesn't need to be fixed.

Thanks everyone for the support and ideas
01-25-2019 10:59 AM
skjeep
Quote:
Originally Posted by Jerry Bransford View Post
Yes the PCM throws exactly that code I posted above with the 3-speed 32RH, I copied it right out of the 2000 Mopar Wrangler TJ FSM.

Jerry, i know the code is there. I also have a 2000 TJ FSM . So i do not argue with you whether it can or can not throw that code. I am SURE IT CAN do that. You are 100% right here


What i am trying to say is, that with the relay mod you get rid of the code P0743 - Torque Converter Clutch Solenoid/Trans Relay Circuits immediately after start.
And (from my own experience) 90% it will NOT throw P0740. But it can happen, i do not deny that.
@TheFreedombird : excellent job there - many happy miles with the stick.
And please if you have time and will to - do the relay mod as i have suggested before.
It is just 2 wires 15minute job and you can then post the result and finish our debate with Jerry
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