my old classic, i had a prob with and i was driving along then all of a sudden no power so pulled into a layby, and went dead, then tried starting, started ok then dead, got AA but they didnt know, got to subaru and they said it the MAF well that lasted a week before the same thing so all i done was unclip the MAF and if still runnin then that ur problem solvbed.
ps subaru told me to do this if it went again, BUT drive steadily home!!!!
sorry long winded