cheers for your reply, it started with a few coughs at idle and the odd mis when driving, nothing major. then it was stalling and it would try to recover and hold at about 1300rpm, took it to nissan and a wire on the afm plug was broke, they fixed it and it ran smooth and no more staling etc. now about a week on this seems related but different. first noticed it waiting at red light when it decided to idle between 100-200rpm didnt stalll but didnt try to recover either. gave it some gas n it went away. knew something was wrong though so all week i have just been taking it easy now its cutting in and out all over the place from a little misfire to fully cutting out for a second? did it the whole last 5 mins that i drove it tonight. so shes retired from being the work taxi for now;) also note the car has no mechanical knocks, taps etc