Its done 175k. I've never seen a bad sensor before so I'm wondring if any of you gurus can check these pics and tell me what condition it looks in?.

BTW - my fd does run a little rich and at times can smell gassy

cheers

 

You can't evaluate how your RX-7 is running by looking at worn O2 sensor pictures. Those sensors all look pretty beat up after about 60k miles on them.

 

jeez just replace it there only like $20 @ name an outo parts store....just use the universal bosch. chances are if that one has 175k on it its been outta whack for about 80,000 miles.