K, here's the deal.  I recently (1300 miles ago) rebuilt a vanagon engine
that was non-working(a head had died).  Anyway, after throwing $1000 into
parts, got it running.  however, it's operation is erratic.  300 miles
after an oil change, the high rpm oil sensor starts going off every once in
a while (mainly, when decelerating and hiting 45 in 4th gear).  I finally
installed an oil pressure gauge, so i could monitor it.  Turns out the
idiot light is correct, i have no oil pressure.  BUT, here's the kicker.  I
installed a fresh oil pump with the rebuild.  It doesn't leak any oil.  It
doesn't burn any oil.  I've tweaked with everything trying to get this
thing stable, even the pressure relief valve.  Any ideas of what may be
happening?
Marshall
86 vanagon