Jim Grant's Tech Tips
Protege, Need’a O2 Sensor?
Q: I have a 98' Mazda Protege and I believe
the O2 sensor is shot. Will anything bad happen to the car without it?
What does that thing do anyway?
Oxygen Sensor (O2) is best viewed as an optimizer. The information it
provides to the vehicle’s computer allows todays vehicles to extract the
most out of the fuel being delivered to the engine. With the price of
fuel climbing that’s not a bad thing. But, the O2 sensor does a lot more
than that. Without the information provided by the O2 sensor a very nasty
exhaust emission (an oxide that can burn through about anything) would
be pouring out the exhaust. If you think the O2 sensor is shot have it
replaced. You will be doing good things for the air & water and save in
fuel as well.