Hi
Can anyone explain how the rad cooling and air con condensor fans are wired
up on the vectra 2.0Di. I am convinced that the rad fan (at the back of the
rad) is broken.  There are two fan switches on the side of the radiator with
three teminals to each, is this one for each fan or are they interconnected
somehow?
There are also three wires at the connector to each fan, why is this, are
they two speed fans?  I don't want to stick 12V from the battery directly
across random terminals into the fans without knowing which ones go direct
to the fan motors!
Any help much appreciated, I've just replaced the head gasket and suspect
that it was the knackered fans that may have contributed to it failing, so
don't want to drive it until I know what's going on with the fan setup.
Cheers Martin

"Martin Crook" <Martin.CrookBOGOFF!@rl.ac.uk> wrote in message 
news:dc87gu$gqi$1@blackmamba.itd.rl.ac.uk...

> Hi
> Can anyone explain how the rad cooling and air con condensor fans are 
> wired
> up on the vectra 2.0Di. I am convinced that the rad fan (at the back of 
> the
> rad) is broken.  There are two fan switches on the side of the radiator 
> with
> three teminals to each, is this one for each fan or are they 
> interconnected
> somehow?
> There are also three wires at the connector to each fan, why is this, are
> they two speed fans?  I don't want to stick 12V from the battery directly
> across random terminals into the fans without knowing which ones go direct
> to the fan motors!
> Any help much appreciated, I've just replaced the head gasket and suspect
> that it was the knackered fans that may have contributed to it failing, so
> don't want to drive it until I know what's going on with the fan setup.
> Cheers Martin


I'm sure the fans are controlled through the ECU.
If you tell me the model year, I'll have a look on TIS and tell you exactly 
how they're wired up.

"Moray Cuthill"  wrote in message
news:42e7e270$1@news.greennet.net...

>
> "Martin Crook" <Martin.CrookBOGOFF!@rl.ac.uk> wrote in message
> news:dc87gu$gqi$1@blackmamba.itd.rl.ac.uk...
> > Hi
> > Can anyone explain how the rad cooling and air con condensor fans are
> > wired
> > up on the vectra 2.0Di. I am convinced that the rad fan (at the back of
> > the
> > rad) is broken.  There are two fan switches on the side of the radiator
> > with
> > three teminals to each, is this one for each fan or are they
> > interconnected
> > somehow?
> > There are also three wires at the connector to each fan, why is this,
are
> > they two speed fans?  I don't want to stick 12V from the battery
directly
> > across random terminals into the fans without knowing which ones go
direct
> > to the fan motors!
> > Any help much appreciated, I've just replaced the head gasket and
suspect
> > that it was the knackered fans that may have contributed to it failing,
so
> > don't want to drive it until I know what's going on with the fan setup.
> > Cheers Martin
>
> I'm sure the fans are controlled through the ECU.
> If you tell me the model year, I'll have a look on TIS and tell you
exactly
> how they're wired up.
>
> Hi Moray

The model is a 99T vectra diesel 2.0Di estate (X20DTL) with aircon, I have a
Haynes manual but it has no fan wiring diagram and not much helpfull info on
the fans.  I'm a newbie to car maintenance, in at the deep end with the head
gasket - what is TIS?
Thanks Martin

>> I'm sure the fans are controlled through the ECU.
>> If you tell me the model year, I'll have a look on TIS and tell you
> exactly
>> how they're wired up.
>>
>> Hi Moray
> The model is a 99T vectra diesel 2.0Di estate (X20DTL) with aircon, I have 
> a
> Haynes manual but it has no fan wiring diagram and not much helpfull info 
> on
> the fans.  I'm a newbie to car maintenance, in at the deep end with the 
> head
> gasket - what is TIS?
> Thanks Martin
>
>


The fans aren't controlled by the ECU. I've sent you an email (if you don't 
get it let me know), with the wiring diagrams and a few notes.

As for TIS, it's Technical Information System, which all manufacturers have 
in one form or another.

"Moray Cuthill"  wrote in message 
news:42e95daa@news.greennet.net...


> The fans aren't controlled by the ECU. I've sent you an email (if you 
> don't get it let me know), with the wiring diagrams and a few notes.
>
> Many thanks, I've just picked up your email so will try and understand the 
> wiring layout tonight before having a fiddle with it all tomorrow.

Cheers
Martin