My Adventure suddenly developed an engine vibration and do not want to idle properly, very rough. BMW diagnosed the problem as being a faulty lambda sensor on the righthand side of the engine. This means R2500 +++++ from the agents. Any knows where I can get hold of a secondhand labda sensor? I heard about a place called ACME in Pretoria may be able to help, but have never heard of them before. Anyone perhaps have a similar problem and found it to be something else? Any suggestions?