I have a 1998 Isuzu Rodeo, V6, 2-wheel (rear) drive.  For the past year or so it has been dying on me suddenly while driving.  It will start up again in a matter of seconds or minutes sometimes.
 Sometimes it happens three times a day, sometimes it doesn’t happen for three months.  Because I can’t replicate the problem, my mechanic can’t figure out what’s wrong.
 Any ideas?