I have a 92 f350 7.3 2wd with e40d transmission. In short, I recently removed the engine to replace all the gaskets and and other small things. Before I started the project, my transmission shifted fine and torque converter was locking up when it needed to. However now that i have everything back together, the overdrive off light is flashing on the shifter and my torque converter is not locking up at all. Is there anything I can check for that might have caused this?