hi all this one lacks power at times from idel, hunting & pulling away it doesn't want to move. and other times its ok, sounds like a air flow fault fitted a new ones cos that was one of the codes it never came back but the other code which is p0130 lamda always comes back put a new one on & after scoped it seems to stay on 1v rich mixture let air into the system it goes down that means lamda is work. its had a new full exhuast system by other garage. any ideal thanx