My wifes focus air con / heater system is not working properly

when you turn the heater fan switch it only runs at top speed on
setting 4 and the aircon wont switch on , if you set it between 1 and
3 the aircon light comes on but the aircon doesnt work neither does
the fan , checked all the fuses and they seem to be ok , any ideas


Steve

On Fri, 05 Mar 2010 16:04:48 +0000, steve robinson wrote:

My wifes focus air con / heater system is not working properly

when you turn the heater fan switch it only runs at top speed on setting
4 and the aircon wont switch on , if you set it between 1 and 3 the
aircon light comes on but the aircon doesnt work neither does the fan ,
checked all the fuses and they seem to be ok , any ideas


Steve

The fan fault is failure of the fan speed resistor pack; Google will give
you the info you need if you fancy replacing it yourself. Note that
failure can be caused by not changing the cabin filter at the proper
intervals.

The a/c won't work without the fan running.

Chris

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Remove prejudice to reply.

Chris Whelan wrote:

On Fri, 05 Mar 2010 16:04:48 +0000, steve robinson wrote:

My wifes focus air con / heater system is not working properly

when you turn the heater fan switch it only runs at top speed on
setting 4 and the aircon wont switch on , if you set it between 1
and 3 the aircon light comes on but the aircon doesnt work
neither does the fan , checked all the fuses and they seem to be
ok , any ideas


Steve

The fan fault is failure of the fan speed resistor pack; Google
will give you the info you need if you fancy replacing it yourself.
Note that failure can be caused by not changing the cabin filter at
the proper intervals.

The a/c won't work without the fan running.

Chris

Thanks , i have a feeling the filters never been changed

On 05/03/2010 18:45, steve robinson wrote:
Chris Whelan wrote:

On Fri, 05 Mar 2010 16:04:48 +0000, steve robinson wrote:

My wifes focus air con / heater system is not working properly

when you turn the heater fan switch it only runs at top speed on
setting 4 and the aircon wont switch on , if you set it between 1
and 3 the aircon light comes on but the aircon doesnt work
neither does the fan , checked all the fuses and they seem to be
ok , any ideas


Steve

The fan fault is failure of the fan speed resistor pack; Google
will give you the info you need if you fancy replacing it yourself.
Note that failure can be caused by not changing the cabin filter at
the proper intervals.

The a/c won't work without the fan running.

Chris

Thanks , i have a feeling the filters never been changed

You'll find its clogged up solid. Should be done every year, every two
years at most. Every one I've ever seen where the heater only works on
speed 4 has had a blown thermal fuse on the resistor pack and a pollen
filter blocked solid. The filters are less than a tenner. You'll need a
set of torx bits to remove the trim under the windscreen to get access
to it.

--
Conor
I'm not prejudiced. I hate everyone equally.

Conor wrote:

On 05/03/2010 18:45, steve robinson wrote:
Chris Whelan wrote:

On Fri, 05 Mar 2010 16:04:48 +0000, steve robinson wrote:

My wifes focus air con / heater system is not working properly

when you turn the heater fan switch it only runs at top speed
on setting 4 and the aircon wont switch on , if you set it
between 1 and 3 the aircon light comes on but the aircon
doesnt work neither does the fan , checked all the fuses and
they seem to be ok , any ideas


Steve

The fan fault is failure of the fan speed resistor pack; Google
will give you the info you need if you fancy replacing it
yourself. Note that failure can be caused by not changing the
cabin filter at the proper intervals.

The a/c won't work without the fan running.

Chris

Thanks , i have a feeling the filters never been changed

You'll find its clogged up solid. Should be done every year, every
two years at most. Every one I've ever seen where the heater only
works on speed 4 has had a blown thermal fuse on the resistor pack
and a pollen filter blocked solid. The filters are less than a
tenner. You'll need a set of torx bits to remove the trim under the
windscreen to get access to it.

Thanks , if its only a thermal fuse thats failed i can solder a new
one into it

On Fri, 05 Mar 2010 19:00:14 +0000, Conor wrote:

You'll need a
set of torx bits to remove the trim under the windscreen to get access
to it.

Not on a Focus you won't.

Early cars had three cross-head screws, later just one.

Get the proper butyl seal from a dealer, and clean all the mating
surfaces properly or it will leak for sure.

Chris

--
Remove prejudice to reply.

On 05/03/2010 19:17, Chris Whelan wrote:

Get the proper butyl seal from a dealer, and clean all the mating
surfaces properly or it will leak for sure.

Eh? Err why?

--
Conor
I'm not prejudiced. I hate everyone equally.

Conor wrote:
On 05/03/2010 19:17, Chris Whelan wrote:

Get the proper butyl seal from a dealer, and clean all the mating
surfaces properly or it will leak for sure.

Eh? Err why?

because they are a ford and this model suffers from water leaks round the
pollen filter (I thought it was early ones that had a major problem there)

On Fri, 05 Mar 2010 22:34:45 +0000, Conor wrote:

On 05/03/2010 19:17, Chris Whelan wrote:

Get the proper butyl seal from a dealer, and clean all the mating
surfaces properly or it will leak for sure.

Eh? Err why?

Water leaks from the pollen filter cover into the passenger side are a
well-documented Focus peculiarity. When you look at the design, it's
hardly surprising.

Chris

--
Remove prejudice to reply.

On Fri, 05 Mar 2010 22:36:21 +0000, Mrcheerful wrote:

Conor wrote:
On 05/03/2010 19:17, Chris Whelan wrote:

Get the proper butyl seal from a dealer, and clean all the mating
surfaces properly or it will leak for sure.

Eh? Err why?

because they are a ford and this model suffers from water leaks round
the pollen filter (I thought it was early ones that had a major problem
there)

Didn't think it was a Ford thing, just a Focus design fault.

The cover was modified around '02; the change seemed to be mainly to
reduce the number of screws from three to one, and increase the number of
breakable plastic clips that are part of the cover.


They certainly haven't made any improvement in the ability or otherwise
to keep the rain out IME!

The above applies to all MK1 and MK2 cars; later are OK.

Chris

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Remove prejudice to reply.