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4r70w J-Mod questions

4K views 2 replies 2 participants last post by  white lincoln 
#1 ·
Hi all,
In rebuilding my valve body, two questions came up that I can't find an answer for:
1) The two springs for the Capacity Modulator Valve and the low servo modulator valve are different, but I can't find in the service manual or the documentation which spring goes first.
(see pic below from https://www.tccoa.com/articles/mn12-techinfo/trans-tech/4r70w_rebuild.html and the pic from my springs below).
One spring is orange/red(?) and the other spring is black. The orange spring is shorter than the black spring.

2) In the 4r70w document mentioned above in the TCCOA forums, the author mentions drilling a hole into the boost sleeve port to keep the torque converter charged. I do not see this in either of the other articles or the Baumen Engineering document I have for the AOD. Is this necessary or required for the J-Mod? (see pic below).

Any comments would be appreciated.
 

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#2 · (Edited)
Dude, how far are you into this transmission?

I would disassemble the one you have, remove the tail shaft, and go buy a 2002 4r70W to rebuild.

Replace all the SEALS, use your tail shaft, and add the upgrade parts for that tranny; Sonnax is your friend.

I used a "Super Tuff Plate" on the 2002 tranny, as a well as the Sonnax Plate.

https://www.explorerforum.com/forums/index.php?threads/4r70w-transmission-rebuild-diary.128800/

The original solenoids are available from PATC, they are good guys.

Old Connector for New Tranny: To match your eec, things have to change)
https://transmissioncenter.net/shop/connector-case-wharness-aode-4r70w-92-97/
Add your solenoids into the new one; i think it's the TCC, but Search.

There are several reasons NOT to rebuild a 94-95 trammy.


If you do as above, it will plug and play.
 
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#3 ·
I am just doing the valve body. Re-building the tranny would be a nice project, but the wife needs her car before next year. :p

I think from the pic from the link above, the orange spring goes in first.

Thanks!
 
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