Cooling fan on all time

In message <_fJRi.7479$qv1.6220@newsfe2-gui.ntli.net>, CHARLES REAR
<charles.rear RemoveThis @ntlworld.com> wrote
>I have a 52 reg 1.6 focus.
>I have just noticed that the cooling fans come on as soon as I start from
>cold, and stay on until I switch off the engine. I thought maybe one or both
>the relays had stuck on, but I've checked them with a meter and that is not
>the case. The temperature gauge is showing normal all the time once it warms
>up. I'm hoping it's not the ECU as I believe that is costly to replace. Is
>it a common fault, has anyone any advice please?

One or both fans?

One of the fans is associated with the air conditioning. The air
conditioning comes on automatically if you adjust the heater/blower
controls to direct air at the windscreen - its used to remove moisture
from the incoming air stream On my 2001 UK model the green LED in the
switch doesn't come on when operating in this mode although the A/C is
actually on

--
Alan
news2006 {at} amac {dot} f2s {dot} com
 >> Stay informed about: Cooling fan on all time 

"Alan" <junk_reply.RemoveThis@amac.f2s.com> wrote in message
news:KtwRHAB+C4FHFwMb@amac.f2s.com...
> In message <_fJRi.7479$qv1.6220@newsfe2-gui.ntli.net>, CHARLES REAR
> <charles.rear.RemoveThis@ntlworld.com> wrote
>>I have a 52 reg 1.6 focus.
>>I have just noticed that the cooling fans come on as soon as I start from
>>cold, and stay on until I switch off the engine. I thought maybe one or
>>both
>>the relays had stuck on, but I've checked them with a meter and that is
>>not
>>the case. The temperature gauge is showing normal all the time once it
>>warms
>>up. I'm hoping it's not the ECU as I believe that is costly to replace. Is
>>it a common fault, has anyone any advice please?
>
> One or both fans?
>
> One of the fans is associated with the air conditioning. The air
> conditioning comes on automatically if you adjust the heater/blower
> controls to direct air at the windscreen - its used to remove moisture
> from the incoming air stream On my 2001 UK model the green LED in the
> switch doesn't come on when operating in this mode although the A/C is
> actually on
>
> --
> Alan
> news2006 {at} amac {dot} f2s {dot} com

Thanks so much guys, especially Alan for the full explanation. I had been
having the airflow set to demist lately, I just went out to try it and it's
OK now. Sigh of relief!
I couldn't find anything in the handbook or Haynes manual about it. Thank
god for this ng.
Ed
 >> Stay informed about: Cooling fan on all time 

Alan wrote:
> In message <_fJRi.7479$qv1.6220@newsfe2-gui.ntli.net>, CHARLES REAR
> <charles.rear.TakeThisOut@ntlworld.com> wrote
>> I have a 52 reg 1.6 focus.
>> I have just noticed that the cooling fans come on as soon as I start from
>> cold, and stay on until I switch off the engine. I thought maybe one
>> or both
>> the relays had stuck on, but I've checked them with a meter and that
>> is not
>> the case. The temperature gauge is showing normal all the time once it
>> warms
>> up. I'm hoping it's not the ECU as I believe that is costly to
>> replace. Is
>> it a common fault, has anyone any advice please?
>
> One or both fans?
>
> One of the fans is associated with the air conditioning. The air
> conditioning comes on automatically if you adjust the heater/blower
> controls to direct air at the windscreen - its used to remove moisture
> from the incoming air stream On my 2001 UK model the green LED in the
> switch doesn't come on when operating in this mode although the A/C is
> actually on
>
great, thanks for the explanation.
i was confused, by the using the heater it raised my fuelcomsuption ~5%.
and it is the demoisturing turning the AC on.
/Jorgen
 >> Stay informed about: Cooling fan on all time