That's primarily a new Sentra thing. New being post 2000. At a low speed, it is able to be "bump" started. Anything above about 15-20 mph and it won't crank. I think it may be some sort of a safety device or something. Of course the Sentra 1.8 does create a good deal of compression. These are issues that didn't exist in the late '90s models. Check online forums and you will find that Sentra owners don't really have the option of EOC. One of the Frontiers I owned wouldn't allow a dramatic downshift (5th to 2nd). Nissan has been known for doing some things to save possible damage to the components, but wind up really become stupid or dangerous. Ask me sometime later about how I totaled my Frontier.
