O2 sensor
#1
What do you guys recommend to replace the O2 sensor? I think the Bosch is cheapest at around $15-20. I know the Mazda OEM is a lot more. Will it make any difference which one I get?
chris
chris
#10
With the engine warmed up, put a voltmeter on the sensor. If its a single-wire one like mine, you should read between 0 and 1 volt between that wire and ground. If you have doubts about it, you should probably just replace it.