700-R4 no 3-4 please help.
OK guys, I have used the search button and read what was there regarding the no 3-4 gear issue. However, I still have some unanswered questions so please bear with me, I will try to be as specific as possible.
I have an '88 T/A GTA 143,000 & about 3,000-4,000 on a 1 yr. old rebuilt tranny. The last trans went when the torque converter grenaded in traffic. (I wasn't driving it at the time, so I don't know) I had a local shop install a rebuilt unit. About 3-4 months after they installed the unit, I lost 3rd and 4th while driving ormally. Since it was under warranty, I had them fix it, no problem. Now it's 2 months out of warranty and again while getting onto Rt. 50 everything was normal, shifter was in OD, trans was in first, then second, then third, wait no something's wrong the enigne is revving like crazy, WTH? When the shifter is in OD, I have first and second fine, slips (very badly) in third and no fourth. I can shift it manually into first and second just fine as well, but slips in manual third and no fourth. I understand that the 3-4 clutches are probably toast. I wasn't dogging the car though, and it's happened twice, so what keeps causing 3-4 to go? And more importantly how can I prevent it from happening again? I intend to rebuild it myself this time, and I have read that packing the clutches with a tighter clearance can help. Anything you guys can clue me in on for the rebuild would be nice as well. Thanks in advance.