J mod problems Help needed
First of all, I have a 99' 4R70W Mustang.
I just J modded my valve body and the car will NOT shift into anything but drive.
When I shift it to reverse or neutral the car goes into drive. Also, it will not shift into 1 or 2 at all.
I did the mild J-mod. I just drilled the sperator plate. I did not touch the 1-2 accumulator or 2-3 accumulator.
The O/D light is blinking on and off also.