Sorry if I missed it, but have you tried to remove the offending O2 sensor?
I'd go to the guy who only charged your $60 to fix the rusted off flange to see if he could sort out the O2 sensor issue. Maybe you can get some part numbers of the factory one.
I'd go to the guy who only charged your $60 to fix the rusted off flange to see if he could sort out the O2 sensor issue. Maybe you can get some part numbers of the factory one.
