Hi

I checked the O2 sensors with the other type [not sure which was which!] The right ones are fitted.

My mistake with this car is the O2 sensors read a high voltage when lean low when rich, I was looking at it with the view it had a rich mixture. However, one I relaised I managed to trace the fault to a corroded crank case breather pipe drawing in air [not much, but enough!] After replacing the pipe and resetting the adaption values the O2 sensors were switching as they should and car running well.

Many thanks for your input.

Regards

Simon