No codes, no overdrive - Page 2 -
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post #16 of 18 Old 06-28-2012, 06:21 AM Thread Starter
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1997 ZJ 
Join Date: Jun 2012
Location: Madison
Posts: 14
The thermister is not the same design and has a different wiring harness. That's why I didn't just put the original one from the ZJ in the WJ tranny. I have decided that I will wire in another 1k resister in series to the one in already put in, that will make the resistance the computer sees almost right. As heat increases the resistance will be close. when I first wired in the 1k I was not think right so after JS97ZJ said what he said I pulled up the formula and laughed at my mistake. It may have been a blessing because when I pulled apart the over drive unit, I laid everything out in order but had to wait a few days for the output shaft to come in and during that time the wire ring, wave ring, and reaction ring got mixed up. (was apart at my work) so going back together the layout was wire ring, wave ring, and on top reaction ring. Totally wrong hahaha. So having it not engage is a good thing. At this point I know what I did wrong and will correct it this weekend. Will let you know when done.

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post #17 of 18 Old 07-03-2012, 02:16 PM Thread Starter
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1997 ZJ 
Join Date: Jun 2012
Location: Madison
Posts: 14
Yesterday I added the resistor in series to the other resistor and corrected the snap rings and wave plate order. Got overdrive, works great. I will add an aux cooler to the transmission cooler flow, just as a fail safe.
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post #18 of 18 Old 07-23-2012, 07:17 PM Thread Starter
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1997 ZJ 
Join Date: Jun 2012
Location: Madison
Posts: 14
just an update, Transmission shifts great. installed a Dana 30 front axle. 4 wheel drive works great. Very good cheap build.
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42re , od , overdrive , wj , zj

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