Date: Sun, 12 Sep 2004 18:54:42 -0700
Reply-To: Vince S <gipsyflies@COMCAST.NET>
Sender: Vanagon Mailing List <vanagon@gerry.vanagon.com>
From: Vince S <gipsyflies@COMCAST.NET>
Subject: Re: The "syndrome" solutions
In-Reply-To: <4144F1B4.6030107@rcn.com>
Content-Type: text/plain; charset="us-ascii"
Larry,
I could be wrong as the ignition on my 89 Vanagon never gave me problem
so I am not too up to speed on the exact working principal. Being the
hall sensor in the distributor it must also used by the ignition to time
the spark plugs in each cylinder while the ECU also use this signal for
fuel injection management. How can the hall sensor fail and the engine
still run? You will lost ignition or the timing be all over the place in
the case of the metal rotor which triggers the Hall sensor is loose from
the distributor shaft.
Does your Golf has a separate sensor for the ignition timing generation?
- Vince
http://gipsyflies.home.comcast.net
1989 Vanagon GL Camper
1993 Mazda Miata (for sale)
1996 Land Rover Discovery
2005 Mini Cooper S
-----Original Message-----
From: Vanagon Mailing List [mailto:vanagon@gerry.vanagon.com] On Behalf
Of Larry Alofs
Sent: Sunday, September 12, 2004 6:03 PM
To: vanagon@GERRY.VANAGON.COM
Subject: Re: The "syndrome" solutions
I have not had Hall sensor problems with a Vanagon, but I just went thru
it with a '94 Golf. This one would fail intermittently, which made it
so much more interesting to track down. On the Golf it doesn't kill the
engine, it just puts it into a default mode which was rich enough to
make it fail emissions testing. I finally caught it in the act using an
oscilloscope (not convenient on the road). You may be able to monitor
it with an LED. In the Golf, the ECU supplies +5 V and the Hall
circuitry in the distributor makes and breaks a connection to ground. I
don't know if the Vanagon approach is the same.
I don't even know if an '85 has a Hall sensor.
good luck,
Larry A.
Mark Edwards wrote:
> A friend has a water cooled 85 that cuts out for no obvious reason.
> Drives on the freeway, warmed up, or just starting out, and it cuts
> out. Pull off the road, and it starts back up again. Sit at a light,
> and it just shuts off. Then starts back up. It has never left him
> stranded, but his wife is demanding that he sell the van, as she does
> not care for the stress involved.
>
> I have been through the archives, and its loaded with lots of
> information, ideas, and things to try, but what I am not going to
> find in there, at least very easily, are reports from folks who have
> actually solved this kind of issue, and what the resolution is.
>
> In order not to keep refilling the archives with everyone's ideas and
> opinions, for which I am grateful, is it possible to just receive some
> posts from those who have actually "lived through" this with the
> results of what you did to fix the problem? I am guessing there are
> multiple variations on the symptoms, but hearing from folks who have
> actually fixed their vans would be really appreciated.
>
> Thanks for any replies.
>
> Mark
>
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