I took it all apart in one last ditch effort to troubleshoot before dropping the trans.
You guys are going to shake your heads... Lol. I missed this on the 2nd pan drop, when I put in the correct spring.
I just discovered that although the 2-3 accumulator piston seal is not torn, it is heavily worn 2/3 of the way around the piston, to the point where basically there is no seal there. The bore and piston are both moderately scored.
According to some of the reading I've done, this could actually cause missing gears and slipping.
If my seal was okay when I did the rebuild, perhaps I put the piston in at an angle or something, causing the rubber to shave itself away over the 3 day period, steady holding less and less pressure, until it no longer held any.
Hopefully I still have some 3rd clutch.
I will be using a bore and piston set from the core I picked up, then take it for a test drive. If it's not in working condition still, I'll begin the swap tonight. I'll keep yall posted.
BTW Shout out to BillBoost for one of his posts that contains all sorts of 4T65E resources. It's an instrumental part of self diagnosing these things, I don't understand why it isn't stickied.
http://www.grandprixforums.net/showthread.php?t=42428
EDIT: I had faith but the problem is unchanged. Time die a swap.
