Where are the O2 sensors located on a 1997 crown Victoria?

Answer 1

There are a total of four oxygen sensors ...This is a dual exhaust motor. The 2 before the catalytic converter are a almost impossible to get to . They are located between the firewall and the exhaust pipe near the manifolds. There are 2 more after the catalytic converter. They are at about a 45 degree angle so you have to either get the car on a lift or crawl all the way under and look near the top of each pipe to see them. I happened to see the leads and followed them to the O2 sensors. Word of advice.. run the motor at least 30 or so minutes and work on them immediately after shutting it off. This will help expand the fitting they are screwed into that will make it somewhat easier to break loose. Your going to need a breaker bar, 2 men and a small boy to get them out though... lol