I have an '81 turbo injection system on my '71 240Z. It will not start if the O2 is disconnected. However, once its running, I can disconect it and it will still run fine. I'm not sure why the O2 is required for startup, however, it only affects the injection system and idle and part-throttle. Make sure that all of your connections are good...
Ian
> How critical is the oxygen sensor in the EFI
> system - will it stop the ability of the Z
> to start and idle. I appreciate practical
> information - not what the book says.
> Restoring 83 280zx Thanks