[Vwdiesel] thermostat & water pump sources and temp gauge

[Drew MacPherson]

So it sounds like it is in fact an input to the fan control unit - perhaps
it's a backup or in addition to the one on the head.

The other possibility is it could be a sensor for a fan run-on switch -
designed to run the fan if the engine is shut off hot - but I don't see
any indication that the AAZ ever came with this circuit.


Drew



On Sat, 29 Mar 2003, Razvan Florea wrote:

> Thanks for your time Drew. I'd also checked the wiring diags and spoken to a
> local VW tech. He told me that there is no such thing on the AAZ engine.
>
> One more hint that I just discovered: If the impedance of the sensor is 0( a
> bridge on the connector) the fan starts...
>
> Razvan
> ----- Original Message -----
> From: "Drew MacPherson" <drew at scirocco.cs.uoguelph.ca>
> To: "Razvan Florea" <florear at hotmail.com>
> Cc: <vwdiesel at vwfans.com>
> Sent: Friday, March 28, 2003 9:15 PM
> Subject: Re: [Vwdiesel] thermostat & water pump sources and temp gauge
>
>
> >
> > Well, I checked the wiring diagrams 3 times over, and I can't find any
> > wires with those colours going to a switch or sender under A/C, glow plug,
> > fan control or engine/coolant monitoring, so it remains a mystery.
> >
> > I'll fire a note off to a friend who's a VW tech to see if he (or vesis)
> > can tell me.
> >
> > Drew
> >
> > On Fri, 28 Mar 2003, Razvan Florea wrote:
> >
> > > Ok I went owt and check it.
> > > The wires are blue-white and red-white(or red-yellow-here is dark
> outside)
> > > Thanks
> > > Razvan
> > > ----- Original Message -----
> > > From: "Drew MacPherson" <drew at scirocco.cs.uoguelph.ca>
> > > To: "Razvan Florea" <florear at hotmail.com>
> > > Cc: <vwdiesel at vwfans.com>
> > > Sent: Friday, March 28, 2003 7:38 PM
> > > Subject: Re: [Vwdiesel] thermostat & water pump sources and temp gauge
> > >
> > >
> > > >
> > > > So can you tell what colour the wires are going into the switch, and
> then
> > > > I'll check the wiring diagram again.
> > > >
> > > > Drew
> > > >
> > > >
> > > > On Fri, 28 Mar 2003, Razvan Florea wrote:
> > > >
> > > > > Drew I have a 2 stage fan (3 pin switch on the lower left side of
> the
> > > > > radiator)
> > > > > 95 deeg celsius 1st stage
> > > > > 105 deg 2nd stage
> > > > >
> > > > > Razvan
> > > > >
> > > > > ----- Original Message -----
> > > > > From: "Drew MacPherson" <drew at scirocco.cs.uoguelph.ca>
> > > > > To: "Razvan Florea" <florear at hotmail.com>
> > > > > Cc: <vwdiesel at vwfans.com>
> > > > > Sent: Friday, March 28, 2003 7:27 PM
> > > > > Subject: Re: [Vwdiesel] thermostat & water pump sources and temp
> gauge
> > > > >
> > > > >
> > > > > >
> > > > > > In 93 there is a listing for a 22-pin 20mm switch (black green) on
> AAZ
> > > > > > engines with 3 stage elctric fan.  Do you have a 3-stage fan?
> > > > > >
> > > > > > Drew
> > > > > >
> > > > > >
> > > > > > On Fri, 28 Mar 2003, Razvan Florea wrote:
> > > > > >
> > > > > > > My vehicle is 1993.
> > > > > > > And Loren I am living in Romania - Eastern Europe
> > > > > >
> > > > > > --
> > > > > > /=============================================\
> > > > > > |  84 Wolfsburg Edition TurboDiesel Scirocco  |
> > > > > > |    http://scirocco.cs.uoguelph.ca/gtd       |
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> > > > > >
> > > > > >
> > > > >
> > > >
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> > > > |    http://scirocco.cs.uoguelph.ca/gtd       |
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> > > >
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> >
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> > |    http://scirocco.cs.uoguelph.ca/gtd       |
> > \=============================================/
> >
> >
>

--
/=============================================\
|  84 Wolfsburg Edition TurboDiesel Scirocco  |
|    http://scirocco.cs.uoguelph.ca/gtd       |
\=============================================/