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part no. for oxygen sensor is 077-906-265.
the mechanic said that as the failed sensor is sending incorect information to ecu SO the mixture of gas and air is incorrected.

GOOD News. dealer in Hong KOng remove the o2 sensor and the car runs perfectly.So the conclusion is the o2 sesor not working properly.
Order a new one from Germany,put in on and the car runs like a dream!
Hope the information helps!

I have my car serviced by the dearlership in hong kong for idling problem now.Will post result. However, any suggestions welcome.
I dont think this engine idling (surgeing ) problem is an isolated problem

any result concerning bad idling from Neutral.I think I have similar situation