Where do I find the o2 sensors on my '03 Mazda MPV? The check engine light went on, so I found out it's the 1 and 2 sensors in bank 1. I'm not as car-literate as I would like, so my son is helping me (actually he'll be doing most of the work, he loves working on cars) but I need advice on where to get two sensors cheaply, and where to look for them. Thanks in advance,
John