Date: Thu, 7 Apr 2016 21:13:41 -0400
Reply-To: Dennis Haynes <d23haynes57@HOTMAIL.COM>
Sender: Vanagon Mailing List <vanagon@gerry.vanagon.com>
From: Dennis Haynes <d23haynes57@HOTMAIL.COM>
Subject: Re: Vanagon syndrome...it sucks!
In-Reply-To: <924c2858-a565-4195-8f28-9d06d744e112@me.com>
Content-Type: text/plain; charset="us-ascii"
Any mechanic or exhaust shop with an oxy-acetylene torch should be able to
get that O2 sensor out for you. The threads may need some cleaning up. Ford
18mm spark plug thread. Auto stores will have the 2 sided spark plug thread
chaser. The larger side is the one you need.
With your symptoms you need to check the O2 sensor input wire for a short
and/or the ground connection for that circuit. The VW harness is masking a
problem there. Start by checking the ground wire that is in the distributor
harness. That ring terminal may look good and if it is connected at the base
of the oil breather tower move it. The input wire (green) is a coaxial wire
with the outer wire connected to the chassis for noise suppression. Make
sure it is not shrted to the signal wire.
Dennis
-----Original Message-----
From: Vanagon Mailing List [mailto:vanagon@gerry.vanagon.com] On Behalf Of
Jason Ellis
Sent: Thursday, April 7, 2016 12:09 PM
To: vanagon@GERRY.VANAGON.COM
Subject: Re: Vanagon syndrome...it sucks!
I wanted to post a follow up to my syndrome issues.
I changed the Temp2 sender, unplugged the O2 sensor and had soldered in a
35V 22uF capacitor. I ended up getting surging while driving around town
which had never happened before. I can't get my O2 sensor out and a new one
is sitting on the work bench. I may have a little cat bypass pipe made with
an O2 bung in it.
Peter Lapp driveway camped with us last weekend and was kind enough to give
me one of the VW AFM pigtails. I removed my capacitor and plugged in the
pigtail. So far, so good! We'll see when I get it on the freeway this
weekend.
Once again, thanks for all the help!
Jason
On Mar 21, 2016, at 11:02 AM, Jason Ellis <jason.ellis@me.com> wrote:
Just wanted to say that you guys are awesome. I had completely forgotten
about how the O2 and Temp2 sensors play into this. I had the blinders on!
Let me do some work and get back to you guys!
Jason
On Mar 21, 2016, at 10:54 AM, Dan N <dn92610@GMAIL.COM> wrote:
I am no specialist in the vanagon syndrome but all the vanagon I own has
that problem..
as suggested the O2 sensor, the temp2 sensor, the throttle body switch all
can give the syndrome...
as for the AFM the things to do is cleaning the the carbon track, add the
capacitor or the pig tail harness. Another thing to check is the AFM harness
it self, it has to be in good condition and the cable is not too tight...