Why does my Ford E4OD not shift gears?
Why does my Ford E4OD not shift gears? Just won't shift. You can run through the gears manually, but it'll just stay in that gear. After some advice, we put in a new soleniod pack, and replaced the switch the controls them. Nothing. Same thing. Borrow a code scanner, comes back with 683, trans temp low and 624, EPC circuit failure. I'm a pretty good wrench, but no Ford expert. What causes AOD transmission to not shift out of first gear? If the governor is sticking it will cause a delayed, or no upshift, depending on how bad the condition...