Guys, looking for some advice here. I'm thinking of considering replacing the upstream O2 sensor on our '09 Mazda 5 (Duratec 2.3, 169K km [105K miles]). No codes or driveability issues, this would be to maintain present performance and economy. There was a recent thread on here, and I've read elsewhere, that O2 sensors gradually lose their efficacy, and allow the engine to run increasingly richer. 160K km/100K miles is often cited as a reasonable mileage at which to change out the O2 sensor.
I will check the dealer, but expect that the part will be quite expensive.
Does anyone know who the OEM manufacturer was?
Rock Auto lists Ultra-Power, Walker, and Bosch as "economy" options, and NTK, Denso, and AC Delco as "daily driver" options. Thoughts on the relative quality of these?
https://www.rockauto.com/en/catalog...t+&+emission,oxygen+(o2)+sensor,5132
Thanks in advance for your help!
I will check the dealer, but expect that the part will be quite expensive.
Does anyone know who the OEM manufacturer was?
Rock Auto lists Ultra-Power, Walker, and Bosch as "economy" options, and NTK, Denso, and AC Delco as "daily driver" options. Thoughts on the relative quality of these?
https://www.rockauto.com/en/catalog...t+&+emission,oxygen+(o2)+sensor,5132
Thanks in advance for your help!