If your Check Engine light is constantly trying to get your attention, one possible problem could be a bad O2 sensor. If you do have a failed oxygen sensor, follow these steps to replace it.

We've all experienced a check engine light coming on, knowing that unless it's taken care of immediately, it'll be a nagging long-term problem in the back of our minds. It's one of the most important ...

A look at what Bosch has done with the oxygen sensor. Find all the details inside Popular Hot Rodding Magazine.

Q. I am installing a wideband oxygen sensor and am curious about what A/F (air/fuel) ratios to aim for. Here is where I am stuck: I run a 20 percent blend of E85, and with the pump gas also with a ...