so my oxygen sensor light is on in my dash, do i just need to replace it? or what does it mean, what does the oxygen sensor even do? my car have been stalling some lately (more then usual) and i just want to know what i need to do. if the sensor is bad where can i get one thats easy for me?

The o2 sensor light is triggered by a mileage box on the fire wall-engine side below the brake booster, there is a little hole in the bottom that has a re-set button that needs pushed-a small "L" shaped allen wrench or stiff wire will work for that.

The O2 sensor is a simple, common unit available at any local auto parts store for around $25 or so.

ken