Overdrive means a taller gear than 1:1 -- such as the .73:1 example above. As such, it does mean that the driveshaft turns faster than the crankshaft.
I think that I too have heard of transmissions labeled "3 speed overdrive" that are 4 speed transmissions. Modern vehicles, however, are advertised with exactly as many gears as they contain. I don't know where a 1993 model falls in that equation.
I don't know where a 1993 model falls in that equation.
I do and I posted on the first page and now it seems lost or ignored. The above four posts openly speculate that perhaps the Base 3-speed auto Corrolla from the 92-94 years perhaps actually were four speeds.
Urr, no, that would be found in the DX and LX of those years. Because of family I ended up owned one of these terrible 3-speed Base Corolla's as a temporary car. It had three speeds, as in first, second and third. There was no O.D., no mystery gear, no unknown shift to a forth speed, no lock up. Just three crappy gears end of story. The only button you could press on the shifter was the one that let you go to Reverse. If you ever downshifted from "D" to 2 at highway speeds you'd likely end up with shrapnel throught hood.
These were horrible drivetrains that lead to premature failure of everything surrounding it. Avoid these particular Corolla's, they indeed were the 3-speed your mom warned you about.
I do and I posted on the first page and now it seems lost or ignored.
Your post didn't appear to be about a transmission called "3 speed overdrive", and the way you described it it obviously didn't have any overdrive gear (regardless of if that gear was in position 3 or 4).