Gonna bump this to ask if any resolution was found. I'm having the exact same symptoms, #1, #2, and #3. Recently replaced O2 sensor with new Motorcraft part, but still throws P0133. I'm in the process of datalogging the problems with Tom.
Mine: 2002 Focus SVT: 142k, Sonic Blue, #1654, All Options
Mods: Tom's Tune, Borla, HFC, STS, Painted Machs, Euro Grill, FRPP Springs
Hers: 2010 Focus SES: 67k, Ebony, Auto, Moon and Tune