ok problem now sorted
i put a maf in out of a almera from scrappy, genuine nissan maf and had to solder the temp sensor on as almeras have this located elsewhere.
then went and put the old lambda sensor in and its running sweet again, ( runs and touchs wood).
so looks like the universal lambda sensor that was new was broke to begin with and the cheap ebay mafs aint much cop either
cheers for all the help frank
