It was 10 degrees here in Rochester this past Wednesday.  Went out to start the
bus and no go.  Battery dead.  Jump-started, ran well.  Got to work, shut off,
tried to restart, and nothing.

Last night tried to do a little investigation in to why this might happen.
Jump-started again & ran fine.  Looked into engine bay to confirm that the
alternator was turning - yes.  Removed battery cable from positive battery
terminal - engine still ran.  Shut off engine, reconnected cable, and tried to
restart - dead.

Battery was purchased new May 99.  Alternator is original.  Any ground points I
could find were cleaned 11/26.

My questions:  Where is alternator output voltage measured?  Where is the
voltage regulator?  I always thought it was part of the alternator.  Does this
sound like a bad battery cell, a bad voltage regulator, or time for an
alternator replacement?

Alan Bosch
& Phred ('88 Wolfsburg)
Rochester, NY