Date:         Thu, 26 Oct 2000 22:34:24 -0400
Reply-To:     David Beierl <dbeierl@ATTGLOBAL.NET>
Sender:       Vanagon Mailing List <vanagon@gerry.vanagon.com>
From:         David Beierl <dbeierl@ATTGLOBAL.NET>
Subject:      Re: erratic heater blower
Comments: To: John Rodgers <inua@HIWAAY.NET>
In-Reply-To:  <39F8DCD8.898F6F5A@hiwaay.net>
Content-Type: text/plain; charset="us-ascii"; format=flowed

At 21:39 10/26/2000, John Rodgers wrote:
>Front heater:  Blower motor runs fine on "High", but on the other
>settings, the motor runs in fits and starts. Very erratic.  Is this
>symptom solid for a relay problem? And you say I can get to it somehow
>through the dash, without having to remove it. That would be terrific.

Unfortunately not.  The relay supplies power for wipers, rear defrost,
heater blower.  If any of those work reliably then the relay is not the
problem.

For the heater, the two low speeds run to two taps on a 60-watt resistor
located inside the blower housing.  If they're both erratic it could be the
switch (swap with rear heater switch to see or just jumper the contacts)
but my guess would be that the output tap on the resistor has come
adrift.  Sorry...

david
ps -- if it's any use, the total value of the resistor is 2.1 ohms, tapped
at 2.1 and 0.7 ohms.  60 watt wire-wound on tubular ceramic core.
David Beierl - Providence, RI
  http://pws.prserv.net/synergy/Vanagon/
'84 Westy "Dutiful Passage"
'85 GL "Poor Relation"