Air Flow Sensor. Vanagon Syndrome

HAve finally put a document together describing how to fix the air flow
sensor.


If any one notices errors or omissions or wants to add to the document
please let me know.

PK

Tried to upload it here but would'nt let me...
The file is on the other Syncro site at:

http://f1.grp.yahoofs.com/v1/oFSjSeqbH0F7psCJPzTJMyJoVx2k7yRARzo_FJFfvNm
CSQIP4qQUGmZVQQwpyRy5uSXAqj6waQ9r-1RbI3lBi4MG2g/technica/Digifant%
20Fault%20Finding/Intake%20Air%20Flow%20Sensor.doc
> Peter <kestel.p@bigpond.com> wrote:
>
> HAve finally put a document together describing how to fix the air flow
> sensor.
>
>
> If any one notices errors or omissions or wants to add to the document
> please let me know.
>
> PK
>
> Tried to upload it here but would'nt let me...
> The file is on the other Syncro site at:
>
> http://f1.grp.yahoofs.com/v1/oFSjSeqbH0F7psCJPzTJMyJoVx2k7yRARzo_FJFfvNm
> CSQIP4qQUGmZVQQwpyRy5uSXAqj6waQ9r-1RbI3lBi4MG2g/technica/Digifant%
> 20Fault%20Finding/Intake%20Air%20Flow%20Sensor.doc

Peter,
That's not really Vanagon syndrome. Vanagon syndrome is caused by static electricity and happened on new vehicles also and was fixed by using a factory part connected into the wiring loom to the air-flow sensor. It mostly happened in low humidity places like Australia and parts of the US.

There is plenty on the internet about it.

Phill
Peter,
 
There's something odd going on there.  As owner of the website, I get an automatic email whenever a new file is uploaded.  I got one recently when Ken uploaded his front suspension file and I got one today to say that yours had been uploaded but when I opened the URL in the message, it was not on the Syncro_T3_Australia site.
 
Sometimes, there can be a delay with the Yahoo Groups server and the only thing that I can think of so far is that there is a lag.  I will keep an eye on it.
 
Les
 
----- Original Message -----
From: Peter
Sent: Tuesday, February 24, 2009 1:44 PM
Subject: [Syncro_T3_Australia] Air Flow Sensor. Vanagon Syndrome

HAve finally put a document together describing how to fix the air flow
sensor.

If any one notices errors or omissions or wants to add to the document
please let me know.

PK

Tried to upload it here but would'nt let me...
The file is on the other Syncro site at:

http://f1.grp. yahoofs.com/ v1/oFSjSeqbH0F7p sCJPzTJMyJoVx2k7 yRARzo_FJFfvNm
CSQIP4qQUGmZVQQwpyR y5uSXAqj6waQ9r- 1RbI3lBi4MG2g/ technica/ Digifant%
20Fault%20Finding/ Intake%20Air% 20Flow%20Sensor. doc

Hi Phil

The fsctory fix was a 20uF capacitor across pins 2&3. They put the
cap inside a wire connector. Depends on who you talk to as to why the
cap was added. From an engineering perspective the cap would reduce
electrical noise. This 'noise' would be a fluctuation in the output
voltage mostly cuased from the crude wiper and carbon track setup.
Ever heard a crackling volume control pot?
Sure static electricity would also cause a problem and this is fixed
by earthing the entire airflow sensor. Aahh, forgot to mention that
in the document! Thanks!

PK



--- In Syncro_T3_Australia@yahoogroups.com, plander@... wrote:
>
>
>
>
>
> > Peter <kestel.p@...> wrote:
> >
> > HAve finally put a document together describing how to fix the
air flow
> > sensor.
> >
> >
> > If any one notices errors or omissions or wants to add to the
document
> > please let me know.
> >
> > PK
> >
> > Tried to upload it here but would'nt let me...
> > The file is on the other Syncro site at:
> >
> >
http://f1.grp.yahoofs.com/v1/oFSjSeqbH0F7psCJPzTJMyJoVx2k7yRARzo_FJFfv
Nm
> > CSQIP4qQUGmZVQQwpyRy5uSXAqj6waQ9r-1RbI3lBi4MG2g/technica/Digifant%
> > 20Fault%20Finding/Intake%20Air%20Flow%20Sensor.doc
>
> Peter,
> That's not really Vanagon syndrome. Vanagon syndrome is
caused by static electricity and happened on new vehicles also and
was fixed by using a factory part connected into the wiring loom to
the air-flow sensor. It mostly happened in low humidity places like
Australia and parts of the US.
>
> There is plenty on the internet about it.
>
> Phill
>
> Peter <kestel.p@bigpond.com> wrote:
>
> Hi Phil
>
> The fsctory fix was a 20uF capacitor across pins 2&3.

No it wasn't. There was a few other components.



This 'noise' would be a fluctuation in the output
> voltage mostly cuased from the crude wiper and carbon track setup.
>

On brand new cars?
I don't think so.


Also it rarely happens in Europe. High humidity.

I have one of these factory Harness, Part No. 025 906 302, for sale. $50 plus shipping.

 

Yurik

 

From: Syncro_T3_Australia@yahoogroups.com [mailto:Syncro_T3_Australia@yahoogroups.com] On Behalf Of plander@optusnet.com.au
Sent: Thursday, 26 February 2009 1:15 PM
To: Syncro_T3_Australia@yahoogroups.com
Subject: Re: Re: [Syncro_T3_Australia] Re: Air Flow Sensor. Vanagon Syndrome

 

OK 'that' factory fix was an active filter ( probably 2nd or 3rd
order. Uses capacitors, transistors and resistors).
A bit more elaborate than a single cap (first order filter) however
the single cap works fine in this application.

I noticed they mentioned 'vibration resonance'. This is just another
way of describing what I have said. It all comes back to the carbon
track and wiper.

And yes even new you could have experienced this problem. If you look
at the carbon through a microscope the surface is far from smooth.
Then you drag a chunk of brass across it expecting a steady current.
This will never happen. Even new carbon pots suffer this problem.

PK

--- In Syncro_T3_Australia@yahoogroups.com, plander@... wrote:
>
>
>
>
>
> > Peter <kestel.p@...> wrote:
> >
> > Hi Phil
> >
> > The fsctory fix was a 20uF capacitor across pins 2&3.
>
> No it wasn't. There was a few other components.
>
>
>
> This 'noise' would be a fluctuation in the output
> > voltage mostly cuased from the crude wiper and carbon track
setup.
> >
>
> On brand new cars?
> I don't think so.
>
>
> Also it rarely happens in Europe. High humidity.
>
Low humidity countries?

I think that there are two seperate issues here. Vanagon syndrome and worn AFM.



> Peter <kestel.p@bigpond.com> wrote:
>
> OK 'that' factory fix was an active filter ( probably 2nd or 3rd
> order. Uses capacitors, transistors and resistors).
> A bit more elaborate than a single cap (first order filter) however
> the single cap works fine in this application.
>
> I noticed they mentioned 'vibration resonance'. This is just another
> way of describing what I have said. It all comes back to the carbon
> track and wiper.
>
> And yes even new you could have experienced this problem. If you look
> at the carbon through a microscope the surface is far from smooth.
> Then you drag a chunk of brass across it expecting a steady current.
> This will never happen. Even new carbon pots suffer this problem.
>
> PK
>
> --- In Syncro_T3_Australia@yahoogroups.com, plander@... wrote:
> >
> >
> >
> >
> >
> > > Peter <kestel.p@...> wrote:
> > >
> > > Hi Phil
> > >
> > > The fsctory fix was a 20uF capacitor across pins 2&3.
> >
> > No it wasn't. There was a few other components.
> >
> >
> >
> > This 'noise' would be a fluctuation in the output
> > > voltage mostly cuased from the crude wiper and carbon track
> setup.
> > >
> >
> > On brand new cars?
> > I don't think so.
> >
> >
> > Also it rarely happens in Europe. High humidity.
> >
--- In Syncro_T3_Australia@yahoogroups.com, "Yurik Orlowsky"
<yuriko@...> wrote:
>Yurik,

I would like to purchase this item !

Tony
> I have one of these factory Harness, Part No. 025 906 302, for sale. $50
> plus shipping.
>
>
>
> Yurik
>
>
>
> From: Syncro_T3_Australia@yahoogroups.com
> [mailto:Syncro_T3_Australia@yahoogroups.com] On Behalf Of
> plander@...
> Sent: Thursday, 26 February 2009 1:15 PM
> To: Syncro_T3_Australia@yahoogroups.com
> Subject: Re: Re: [Syncro_T3_Australia] Re: Air Flow Sensor. Vanagon
Syndrome
>
>
>
> Here is a picture of it.
>
> http://www.telusplanet.net/public/gary2a/rack/afmharness/afmharness.htm
>
Peter and All,

Had no luck using your doc link below ... can't get it to work despite
linking all the bits of the address back together. Any other options
please?

Peter, can you describe or show a pic as to where exactly did you run an
earthing link from the AFM .. I'm assuming it's not simply from the
aluminium enclosure. TIA.

Ken

--- In Syncro_T3_Australia@yahoogroups.com, "Peter" <kestel.p@...>
wrote:
>
> Hi Phil
>
> The fsctory fix was a 20uF capacitor across pins 2&3. They put the
> cap inside a wire connector. Depends on who you talk to as to why the
> cap was added. From an engineering perspective the cap would reduce
> electrical noise. This 'noise' would be a fluctuation in the output
> voltage mostly cuased from the crude wiper and carbon track setup.
> Ever heard a crackling volume control pot?
> Sure static electricity would also cause a problem and this is fixed
> by earthing the entire airflow sensor. Aahh, forgot to mention that
> in the document! Thanks!
>
> PK
>
>
>
> --- In Syncro_T3_Australia@yahoogroups.com, plander@ wrote:
> >
> >
> >
> >
> >
> > > Peter kestel.p@ wrote:
> > >
> > > HAve finally put a document together describing how to fix the
> air flow
> > > sensor.
> > >
> > >
> > > If any one notices errors or omissions or wants to add to the
> document
> > > please let me know.
> > >
> > > PK
> > >
> > > Tried to upload it here but would'nt let me...
> > > The file is on the other Syncro site at:
> > >
> > >
> http://f1.grp.yahoofs.com/v1/oFSjSeqbH0F7psCJPzTJMyJoVx2k7yRARzo_FJFfv
> Nm
> > > CSQIP4qQUGmZVQQwpyRy5uSXAqj6waQ9r-1RbI3lBi4MG2g/technica/Digifant%
> > > 20Fault%20Finding/Intake%20Air%20Flow%20Sensor.doc
> >
> > Peter,
> > That's not really Vanagon syndrome. Vanagon syndrome is
> caused by static electricity and happened on new vehicles also and
> was fixed by using a factory part connected into the wiring loom to
> the air-flow sensor. It mostly happened in low humidity places like
> Australia and parts of the US.
> >
> > There is plenty on the internet about it.
> >
> > Phill
> >
>
Hi Ken

Have deleted the document since it has to be amended after some
discussion (rightfully) about pedantics. It will be back later today.
The earthing is simple. Just use a lug and attach a wire anywhere on
the alu case to anywhere on the chassis.

PK


--- In Syncro_T3_Australia@yahoogroups.com, "Ken" <unclekenz@...>
wrote:
>
>
> Peter and All,
>
> Had no luck using your doc link below ... can't get it to work
despite
> linking all the bits of the address back together. Any other options
> please?
>
> Peter, can you describe or show a pic as to where exactly did you
run an
> earthing link from the AFM .. I'm assuming it's not simply from the
> aluminium enclosure. TIA.
>
> Ken
>
> --- In Syncro_T3_Australia@yahoogroups.com, "Peter" <kestel.p@>
> wrote:
> >
> > Hi Phil
> >
> > The fsctory fix was a 20uF capacitor across pins 2&3. They put the
> > cap inside a wire connector. Depends on who you talk to as to why
the
> > cap was added. From an engineering perspective the cap would
reduce
> > electrical noise. This 'noise' would be a fluctuation in the
output
> > voltage mostly cuased from the crude wiper and carbon track setup.
> > Ever heard a crackling volume control pot?
> > Sure static electricity would also cause a problem and this is
fixed
> > by earthing the entire airflow sensor. Aahh, forgot to mention
that
> > in the document! Thanks!
> >
> > PK
> >
> >
> >
> > --- In Syncro_T3_Australia@yahoogroups.com, plander@ wrote:
> > >
> > >
> > >
> > >
> > >
> > > > Peter kestel.p@ wrote:
> > > >
> > > > HAve finally put a document together describing how to fix the
> > air flow
> > > > sensor.
> > > >
> > > >
> > > > If any one notices errors or omissions or wants to add to the
> > document
> > > > please let me know.
> > > >
> > > > PK
> > > >
> > > > Tried to upload it here but would'nt let me...
> > > > The file is on the other Syncro site at:
> > > >
> > > >
> >
http://f1.grp.yahoofs.com/v1/oFSjSeqbH0F7psCJPzTJMyJoVx2k7yRARzo_FJFfv
> > Nm
> > > > CSQIP4qQUGmZVQQwpyRy5uSXAqj6waQ9r-
1RbI3lBi4MG2g/technica/Digifant%
> > > > 20Fault%20Finding/Intake%20Air%20Flow%20Sensor.doc
> > >
> > > Peter,
> > > That's not really Vanagon syndrome. Vanagon syndrome is
> > caused by static electricity and happened on new vehicles also and
> > was fixed by using a factory part connected into the wiring loom
to
> > the air-flow sensor. It mostly happened in low humidity places
like
> > Australia and parts of the US.
> > >
> > > There is plenty on the internet about it.
> > >
> > > Phill
> > >
> >
>

Tony,

Sorry the item is sold.

 

Regards

Yurik

 

From: Syncro_T3_Australia@yahoogroups.com [mailto:Syncro_T3_Australia@yahoogroups.com] On Behalf Of tonyricketts99
Sent: Friday, 27 February 2009 1:29 AM
To: Syncro_T3_Australia@yahoogroups.com
Subject: [Syncro_T3_Australia] Re: Air Flow Sensor. Vanagon Syndrome

 

--- In Syncro_T3_Australia@yahoogroups.com, "Yurik Orlowsky"
<yuriko@...> wrote:

>Yurik,

I would like to purchase this item !

Tony
> I have one of these factory Harness, Part No. 025 906 302, for sale. $50
> plus shipping.
>
>
>
> Yurik
>
>
>
> From: Syncro_T3_Australia@yahoogroups.com
> [mailto:Syncro_T3_Australia@yahoogroups.com]
On Behalf Of
> plander@...
> Sent: Thursday, 26 February 2009 1:15 PM
> To: Syncro_T3_Australia@yahoogroups.com
> Subject: Re: Re: [Syncro_T3_Australia] Re: Air Flow Sensor. Vanagon
Syndrome
>
>
>
> Here is a picture of it.
>
>
href="http://www.telusplanet.net/public/gary2a/rack/afmharness/afmharness.htm">http://www.telusplanet.net/public/gary2a/rack/afmharness/afmharness.htm
>

Have downloaded the file successfully after ammendments. Still forgot
to add the bit about earthing the unit.


--- In Syncro_T3_Australia@yahoogroups.com, "Les Harris"
<leslieharris@...> wrote:
>
> Peter,
>
> There's something odd going on there. As owner of the website, I
get an automatic email whenever a new file is uploaded. I got one
recently when Ken uploaded his front suspension file and I got one
today to say that yours had been uploaded but when I opened the URL
in the message, it was not on the Syncro_T3_Australia site.
>
> Sometimes, there can be a delay with the Yahoo Groups server and
the only thing that I can think of so far is that there is a lag. I
will keep an eye on it.
>
> Les
>
> ----- Original Message -----
> From: Peter
> To: Syncro_T3_Australia@yahoogroups.com
> Sent: Tuesday, February 24, 2009 1:44 PM
> Subject: [Syncro_T3_Australia] Air Flow Sensor. Vanagon Syndrome
>
>
> HAve finally put a document together describing how to fix the
air flow
> sensor.
>
> If any one notices errors or omissions or wants to add to the
document
> please let me know.
>
> PK
>
> Tried to upload it here but would'nt let me...
> The file is on the other Syncro site at:
>
>
http://f1.grp.yahoofs.com/v1/oFSjSeqbH0F7psCJPzTJMyJoVx2k7yRARzo_FJFfv
Nm
> CSQIP4qQUGmZVQQwpyRy5uSXAqj6waQ9r-1RbI3lBi4MG2g/technica/Digifant%
> 20Fault%20Finding/Intake%20Air%20Flow%20Sensor.doc
>