Use "in perfect working order" in a sentence

1. The engine is now in perfect working order.

2. The engine has been tuned and is now in perfect working order.

3. The cooker, heaters and other electrical installations are all in perfect working order.

4. Routine whirlings and Curtsyings of the Earth and other heavenly bodies in flux, and after a time you began to have that “this is where I came in” sensation Nothing can grow more monotonous than a constella tion in perfect working order