Hey. I recently asked a question about my 4r70w with 80 miles puking all of its fluid out while coasting down the freeway. This 00 explorer trans had a full rebuild including a rebuilt stock torque converter. After pulling the trans and TC, the front trans seal fell out when I pulled the torque converter off. The seal looked brand new. The spring wasn't broke or stretched. Also, there didn't appear to be any defects. After deciding what to do next. I finally thought I would try an oem seal and add an external oil cooler plumbed in after the rad cooler. Even though the trans wasn't running warm before (180ish), i thought i would eliminate any other possibilities for the seal failure.
Well, today I was on my way home after reinstalling everything. 32 miles in my trans puked again. Just like before it happened on the freeway doing about 60. The trans was at 180 and in O/D. Before I left I made sure the fluid was at the right level. Up until this, I had been cruising at about 50 for about 20 mins. I stopped for a couple of stop signs where the trans acted perfect. Down and up shifting.
I am at a loss. The only other thing I can think of is maybe I have the wrong flexplate. I ran this flexplate behind my old 302 with a c4. The flexplate is maybe 10 years old. Or, maybe something with the torque converter. I don't know. Any ideas on where to start? As usual, thanks for the help.
Well, today I was on my way home after reinstalling everything. 32 miles in my trans puked again. Just like before it happened on the freeway doing about 60. The trans was at 180 and in O/D. Before I left I made sure the fluid was at the right level. Up until this, I had been cruising at about 50 for about 20 mins. I stopped for a couple of stop signs where the trans acted perfect. Down and up shifting.
I am at a loss. The only other thing I can think of is maybe I have the wrong flexplate. I ran this flexplate behind my old 302 with a c4. The flexplate is maybe 10 years old. Or, maybe something with the torque converter. I don't know. Any ideas on where to start? As usual, thanks for the help.