Oxygen o2 Sensors
 

Does anyone know of a website that has a step through picture process to change O2 sensors and if it is a difficult job to do. About how long does it take also??? Thanks

RE: Oxygen o2 Sensors
 

Kind of depends on what car you have. But you knew that:)

RE: Oxygen o2 Sensors
 

Yea, it depends on the car, but usually they aren't too bad unless they are rusted in...then sometimes wrench clearance is an issue. It takes a 22mm wrench. Make sure to use some antiseize on the threads when you put the new ones in.

RE: Oxygen o2 Sensors
 

I have a 1999 Porsche 996. Thanks

If you can reach them, like on a lift or ramps, use a slotted socket for the wire and work your way around to find the faulty one,