My 2002 ford winstar key will not turn in the ignition

Spray the ignition lock mechanism with WD-40, insert key, and turn the steering wheel to the left, as you turn the key.

Even though written specifically for Hondas, these links may help provide additional perspective on your problem:

https://www.askmehelpdesk.com/cars-t...tml#post224842

https://www.askmehelpdesk.com/cars-t...tml#post258005