I sure would suspect the alternator's voltage regulator.
Try the five quick and dirty checks listed at
http://home.earthlink.net/~honda.lioness/id13.html , about
two-fifths of the way down.
Try also the 97 Civic service manual's checks on the
alternator, using the free online manual linked at
http://www.honda.co.uk/car/owner/workshop.html .
Updates are welcome.
> Hello,
> I have a very interesting problem with my 1997 Honda
[quoted text clipped - 13 lines]
> type of
> voltage regulator that needs replaced?
Graham W - 26 Apr 2006 22:20 GMT
A quick check of the battery terminals and the ground strap
would be good, too. The battery should hold down these surges
if everything is in good order. By the way, we should be talking
voltage surges here :).

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> I sure would suspect the alternator's voltage regulator.
>
[quoted text clipped - 25 lines]
>> type of
>> voltage regulator that needs replaced?