<VV> pulsing headlights problem solved

Mark Durham 62vair at gmail.com
Sun Feb 26 18:02:46 EST 2012


Jim, if you have the std alternator, its probably working as designed.
The only way to cure that is to put a different pulley on that spins
the alternator faster at engine idle.
Mark Durham
Sent from my Windows Phone
From: James Cooper
Sent: 2/26/2012 10:23
To: virtualvairs at corvair.org
Subject: <VV> pulsing headlights problem solved




I took another look at the car this morning and decided to re-install
the old mechanical points-type regulator and then adjust the voltage
down from 17.5 to 14.5 range and see what it would do.The pulsing in
the lights immediately went away for good.  Ok.  So I went to Advance
Auto Parts (free plug for them here since the kid running the parts
counter went out of his way to make it a good transaction) and
purchased another solid-state voltage regulator.  It is a BWD R281Z
and with it installed - same results, voltage is stable with the
alternator loaded and unloaded going down the road at about 14.2-14.5
volts and no pulsating out of the lights.If I load up the alternator
with everything on; high beams, wipers, blower, turn signal, brake
lights- the voltage does drop considerably at idle and in gear but the
warning light doesn't come on.  I don't know if this means the
alternator is weak but I suspect it is just the way it is.So....unless
something in the electrical system c
 auses this regulator to screw up I will consider it a good fix.  The
original solid state regulator came from a very reliable parts source
but they can't control the manufacturer- I don't fault them if it was
defective off the shelf.  Or maybe my car/alternator/system just
doesn't work well with their brand?If it does fry it, I am going with
a new alternator and regulator.  And I'm carrying a flashlight with me
in the car.  : )Jim
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