To find it definitively, you should:
* Consult a repair manual specific to your 2000 Lincoln Town Car: This is the most reliable method. The manual will have diagrams showing the precise sensor location.
* Use a repair database: Online automotive repair databases (like AllDataDIY, Mitchell 1, etc. - some require subscriptions) often have detailed diagrams and information.
* Look at online forums: Search forums dedicated to Lincoln Town Cars or Ford vehicles (since Lincoln uses Ford engines and parts). Someone may have posted pictures or described the location.
Important Note: Bank 1 is typically the side of the engine where cylinder #1 is located. This is usually the passenger side on most front-wheel-drive vehicles, but it's crucial to double-check your specific engine layout. The sensor will be wired into the vehicle's harness. It's a threaded sensor that screws into the exhaust pipe.