E4od problems.. No 1st or overdrive | Diesel Truck Forum ...
With the selector in drive, I have no overdrive or what feels to be like 1st gear. If I manually shift it from 1 to 2 it does not shift, it will only shift again if I put it into drive, shifting into what I would guess to be third gear. Reverse works fine. I checked the tps today, I have 1.2v at idle and 4.2v at wot, so that seems to check out.