O2 Sensor Change?

[Jack W]

I'm not getting any codes. Mileage and performance is ok. I've got 166xxx on the clock and was thinking ahead, maintenance wise, of changing the O2 sensors. So...which ones, and how many? 5.7, dual exhaust.

 

[Mojo88]

I'm in same boat, but with a LOT less miles. I'm not getting code(s), but the O2 sensor monitor is reading "Incomplete", even about a month after I did some tuning. All of my emission monitors usually reset pretty quickly. Anyway, I'm gonna replace all four of mine, with OEM parts.

With that many miles, I think it's a no-brainer for you - do all four.

 

[Dean2]

I NEVER replace parts that are still working fine. My V10 has 150,000 miles on it and outside of a new power steering pump and fuel pump that needed to be replaced and consumables like brakes, shocks and front end parts, the rest is still bone stock. There is zero guarantee new parts will last anywhere near as long as the existing parts will if left in place.