hey guys please tell me what you can make out of this?? I have never had any codes and these are originals. Im at 67k miles.


Right front and Right Rear






Left Front and Left Rear

 

imo the rf has a normal look to it and the other side seems a little rich maybe ?, why are they out..... were you getting any codes ? an o2 sensor is one of those things that the looks may be deceiving.

 

The rears should be more sooted up than the fronts. Your right side is running richer than your left side. As long as the sensors are stil returning a signal that's within range, then it won't throw a code - but you can clearly see by the the richness that's it's time to replace those rears.

 

agreed the right side is running more rich than the left and your right rear is nearly ready to throw codes if it hasnt already.

 

Thanks guys yeah I think you are all right. I took them out to test them on another DII but wanted to take pics and post them for review 1st.

Like I said, I haven't thrown any codes....yet. I get about 11.5 to 12 mpg but I drive a lot of hills...