My 1990 Dodge Ram 250 4x4 has overdrive, and it quit working on me. I still cannot figure out why. However, I was doing some research on the transmission for the possible lube issues you talk about in the RWD Chrysler transmission article at the magazine site. You describe Sonnax upgrades, I called them, and they were very prompt in calling me back. They were busy and told me to consider putting in a manual valve drop-in and a line to lube pressure regulator—all bolt in, no drilling, basically plug and play. Will this help my overdrive issue?
Ty
