Wasn't intending to be back for a while due to aforementioned personal circumstances, but, in a masterpiece of timing, and after a long period of behaving impeccably, the Blue Beastie has just done as described, with accompanying "dieselling" noises, as our local indie calls them.
Will clean the sensors (again) - MAF is relatively new - but also noticed the fuel and temp gauge readings seeming to wander, and the DTE going up and down erratically. Could it all be down to impending battery failure?