How do I separate the bottom ball joint 2003 ford taurus

This link will take you through the process, step-by-step:

https://www.askmehelpdesk.com/cars-trucks/faq-how-troubleshoot-repair-maintain-hondas-selected-other-vehicles-46563-9.html#post1691894

Without the "trick," it's impossible to get the lower ball joint off the lower control arm on Tauruses I've worked on.