Date: Sun, 24 Apr 2005 11:19:35 -0400
Reply-To: Dennis Haynes <dhaynes@OPTONLINE.NET>
Sender: Vanagon Mailing List <vanagon@gerry.vanagon.com>
From: Dennis Haynes <dhaynes@OPTONLINE.NET>
Subject: Re: How Long Does it Take Your Van to Warm up? Cont.
In-Reply-To: <78.71c3963c.2f9d055f@aol.com>
Content-type: text/plain; charset=us-ascii
What else besides the harness did you swap? The 84 and 87 have
drastically different fuel injection and ignition components. The 84
system, is known as Digijet. It is basically a carry over from the air
cooled engines with the addition of the O2 sensor. The ignition is a
separate system and idle speed stabilization is done by advancing the
ignition timing. The distributor uses both vacuum and mechanical advance
systems. Idle warm up speed is done with an "auxiliary" air regulator,
mounted the right head. It uses a heating element to close it quickly
during cool weather.
The 87 uses a Digifant system. Ignition is now part of the ECU and
ignition timing is electronically controlled. Distributor has no advance
mechanism at all. Idle warm up speed and stabilizing is done with an
electronic valve, controlled by a separate idle speed controller,
mounted in front of the right tail light. This is the set up that
buzzes.
So if you are using the 84 harness, you really need the 84 bits and
pieces including the distributor. You need to either complete the 84
conversion or get the parts to keep the 87. The 87 isle stabilizer can
be used with the 84 system but you will have to figure out the wiring.
The idle stabilizer controller needs signals from the engine speed and
temperature. It also needs signals form the AC and power steering.
Dennis
-----Original Message-----
From: Vanagon Mailing List [mailto:vanagon@gerry.vanagon.com] On Behalf
Of James Benthall
Sent: Sunday, April 24, 2005 10:21 AM
To: vanagon@GERRY.VANAGON.COM
Subject: Re: How Long Does it Take Your Van to Warm up? Cont.
Sorry about that...I keep forgetting that I have a "bastardized" wiring
system from
a 1984 harness, so maybe that is where the confusion is [long story, but
in
essence
I bought my van for $600. after a engine fire toasted it and when we
where
putting it
back together we couldn't find anything but a junked 84 in our area...I
will
get the
proper harness one day when I get the funds ;-]
On pgs. 28.11 and 28.28 of Bentley it shows the idle stabilizer I'm
referring to, and
on 28.11 it shows it on the firewall as I have placed it, BUT I noticed
that
it is for a
Air-cooled AFC system! My bad! Can anyone tell me if the
configuration
that it is
supposed to have behind the firewall has the same part? Are the actual
components
the same? Just wondering...
thanks,
james in houston, tx.
1987 (or 1984?) Westy ;-)
