<polymorph@polyphoto.com> wrote
> I see some mentions here of worn out brushes. Where might
I find those
> in the northwest USA? I've checked a few places like
Autozone and it
> lists them but says unavailable.

How many miles are on this 91 Accord LX?

Like you are thinking, and from my reading, I would change
the brush assemblies next. I understand a life of around
100k miles is good for brushes.

You can buy a brush assembly for about $21+ about $7 for
shipping at www.slhonda.com . Click on "Parts and Service,"
then "Buy Parts Online." They're on the West Coast. The
alternator is under the "Engine" section. I have used them
several times. They give good service and have competitive
prices. Add a few oil filters or other maintenance items to
milk the shipping charge for every drop.

Consider changing out the two bearings, for another $35
total or so, too. Though I think the brushes are the first
thing to suspect.

Unless the car's been in a flood, then based on reports here
I would not suspect the ECU. The brushes or maybe bearings
are much more likely to be the problem.

Stay tuned because people have said the brushes are easily
purchased locally at electrical shops. But I don't think
this is the same as the "brush assembly" you'll see at Honda
OEM parts sites.

I am looking to do this as preventive maintenance in the
next year or so.

My 91 Civic's alternator died after eight years and 106k
miles. I didn't know any better and took it to the dealer.
It may have only needed new brushes.

Updates are welcome.