Dear Versa/Tiida Comrades,
My 2011 1.8L 4speed automatic sedan has developed the habit of cold starting perfectly well and then:
1) idling smoothly around 1200 RPM for 20 seconds,
2) then idling VERY ROUGH, around 1000 RPM as if on 3 cylinders, for 20 seconds more or less,
3) then idling...