The Subaru Alternator does not completely interface properly with the
alternator warning light. Also it does make a difference if a Westy or not.
There somehow is/was a fix in there. The fact that it takes time for the
light come back on means something is happening temperature wise or a
capacitance issue time wise. Go to the kit supplier to get some better
information to troubleshoot it.

Dennis

-----Original Message-----
From: Vanagon Mailing List [mailto:vanagon@gerry.vanagon.com] On Behalf Of
brett rueff
Sent: Tuesday, November 22, 2011 9:07 PM
To: vanagon@GERRY.VANAGON.COM
Subject: alternator light problem

Hi All....about to go through a trouble shoot and thought I would see what
the list thinks first.
I have a 91 Vanagon with a EJ22.  The alternator is from the subaru but it
still connects (somehow?) into the stock VW dash light for the alternator.
My alternator bearing went last week and I had it rebuilt.  Put the new
alternator in, start, light goes out as its supposed to.  Go for a
drive....after about 5 minutes light starts to come on dimly at first and
within 5 minutes is on full bright.  Go back to the house, pullout voltmeter
- while running output is 14.2V at alternator and 14.0V at the battery under
passenger seat.....so alternator seems to be working fine.....
where to start?
BrettVancouver