http://www.cybcon.com/~patcal/new.htm">Idle stabilizer pics</A>, for pics of the
transistor and see the following message about replacing the burnt
transistor. I have tried this repair but it did not work for me. There may
be other components in my ISCU that are burnt also that I am unaware of. I
got a used one from a friend that I am using now. I still have two units on
my desk awaiting a repair solution.
Sender: Vanagon Mailing List <vanagon@vanagon.com>
From: Johan Nyberg <johan.nyberg@ABC.SE>
Subject: Re: slight surge in idle speed
Comments: To: vanagon@vanagon.com
Content-Type: text/plain; charset="us-ascii"
Well, the little black box controlling the idle bypass valve can sometimes be
repair at a cost of a dollar or two. I'm NOT saying it can always be
repaired, or that the electronics are always to blame for this problem.
At the moment I have two broken controllers on my desk, they come from a
neighbour's Vanagon. I don't know why his van blows them, maybe the valve is
stcking and overloading the power curcuit.
I've found that replacing the BD 438 power transistor can fix this. I've been
using an "upgrade", the BD 912, partly because I can't easily get the BD 438.
The BD 912 has higher ratings, and should last better. One of them didn't
though. It lasted one year. On my own van it has lasted for three years.
Still, it is a cheap and proper fix.
Cheers
Frank Condelli
Almonte, Ontario, Canada
<A HREF="http://members.aol.com/BusFusion/bfhome.htm">BusFusion</A> a VW Camper camping event, Almonte, ON, June 12 ~ 15, 2003
'87 Westy & Lionel Trains
Member: <A HREF="http://www.vanagon.com/">Vanagon List</A>, <A HREF="http://www.bcn.net/~limbo/">LiMBO</A>, <A HREF="http://www.westfalia.qc.ca/">IWCCC</A> & <A HREF="http://www.ccvwc.ca/">CCVWC</A>
Vanagon/Vanagon Westfalia Service in the Ottawa Valley
<A HREF="http://members.aol.com/Fkc43/stebro.htm">STEBRO/Vanagon Stainless Steel Mufflers</A>
<A HREF="http://members.aol.com/Fkc43/busindex.html">Frank Condelli & Associates</A> or http://frankcondelli.com