Change your O2 sensors regularly

[tyhuck]

I changed mione today after getting a couple of DTCs and a SEL. All I can say is WOW! I noticed an immediate change in the behavior of my engine. I didnt think it was running rough before, but it accelerates so much more smoothly, it maintains speed more easily, and seem to be running much more smoothly. It even seems to be idline smoother. LIke I said, my truck didnt seem to be running badly at all, but it was almost like night and day.

 

I would suggest changing your O2 sensors at least every 100K miles. I had just over 106K on mine.

[Carder09]

Guess its about time for mine; Though I do plan on removing the cats and two rear sensors when I put on the new headers and custom exhaust.