AWD stalling at idle

[WytWun]

If you replace an oxygen sensor, it is a really good idea to reset the ECU to force re-establishing the fuel trims and the idle settings.

[leadfoot6]

It's been 12 months since the oxygen sensor was replaced - by the same mechanic that did the scan to find that the CEL displayed was caused by the AFM failure(6 months after the o2 sensor replacement).

(He has a hoist - I don't - hence I got him to replace the o2 sensor but I was quite able to swap out the AFM myself)

Would 12 months of running with the new o2 sensor(without an intentional ECU reset by powering down the ECU) have been enough for the ECU to adjust to the replacement o2 sensor?

My car idles as perfectly as I could hope(except at initial cold startup- which quickly becomes perfect -and stable- after a few minutes warm up).

About 700rpm once warm.

Other than a quick visual inspection of the throttle body - no aerosol cleaner needed, I have not touched it.

Fuel consumption is IMO quite good for an AWD @ 10.8 litres per100km.

I don't think I can reasonably expect better behaviour from a 13 year old car.

And absolutely no repeat of the stalling problem since fitting the replacement 2nd hand AFM.