had an idea it may be the MAF sensor but on trip away, 800km, it packed up
, was replaced with brand new, out of a 2008 model
, i thought you beauty
, economy at last.
returned avg of 15.5ltrs/100kms about 17mpg i think, not towing, cruising at about 110km/h real easy driving aircon on 50% of time.
reading the d40 maintenance manual obtained via download from this site, it states that bad fuel economy can be linked to a number of disfunctional sensors eg., maf sensor, fuel pressure sensor, crank position sensor, cam position sensor, turbo boost sensor etc..
seems if one is not functioning as it should the whole system struggles.
so many sensors, maybe when they all work correctly, bingo 30 plus mpg,
when they don't, things are not so rosey.
because there are so many sensors with the potential for failure, it would be difficult to single out and identify any one as the cause of excessive fuel use (which would lead to a relatively easy fix - recall/replacement). many possibly faulty sensors + many engines = nissan too hard basket.
anyway just an idea.