"Humpty Dumpty" > wrote in message
...
>
> "Charlie Andrews" > wrote in message
> ...
>> Humpty Dumpty wrote:
>>> Are you sure the mixer flaps are not just sticking - that's a common
>>> fault and happened to me.
>>> There are 2 small hex or torq screws holding the center air control in
>>> place, a little difficult to get at and see as it's so close to the
>>> windscreen. Remove them, and lift up the plastic bit, but do it slowly
>>> as you will have to reach under to unclip the alarm LED.
>>> Then you can reach down and feel the flaps (ohh err!!) and give them a
>>> wiggle as you change the heater direction control...just see if there's
>>> anything trying to move and just stuck.
>>> If you are lucky, then all it needs is a little silicone spray to get
>>> things moving again.
>>>
>>>
>>>
>>> "Charlie Andrews" > wrote in message
>>> ...
>>>> Charlie Andrews wrote:
>>>>> Hello!
>>>>>
>>>>> How are we all? Good!
>>>>>
>>>>> Can anyone shed any light on this for me?
>>>>>
>>>>> The other day, my 156 started blowing hot air very enthusiastically at
>>>>> me while driving, with the air controls set as follows:
>>>>> Temp:20
>>>>> Air qty: Auto
>>>>> Other knob: Demist/feet.
>>>>>
>>>>> Since then, it will only give me a hot air- as if the sensors feel
>>>>> that the temperature in the cabin is very cold, even when the temp
>>>>> selector is turned all the way to the left.
>>>>>
>>>>> I have tried the procedure for putting the cc in 'manual' mode and
>>>>> back from the handbook, to no avail. The only thing that I can govern
>>>>> is the amount of hot air (using the middle knob) that I get.
>>>>>
>>>>> Other info that may be useful:
>>>>> Alfa 156, 2000, 1,8TS.
>>>>> Also, the water temperature gauge has been gradually showing a
>>>>> progressively lower temp (now stabilises around 1/4 of the gauge) for
>>>>> the last few months. May be associated with the same problem,
>>>>> possibly not?
>>>>>
>>>>> I am in Wilmslow, Cheshire, the local dealer, Mangoletsi, is a bit of
>>>>> a trek, but they seem OK. Could anyone give me a clue as to what
>>>>> might be going on, perhaps it's something I can fix myself, how much
>>>>> it's likely to cost?
>>>>>
>>>>> By the way, is there another option for Alfa repairs near here?
>>>>>
>>>>> All advice greatly received!
>>>>>
>>>>> Charlie
>>>> Right!
>>>>
>>>> The car has been to Mangoletsi, who tell me that the mixer motors
>>>> (controlling the heating flaps, and regulating the hot/cold air mix)
>>>> need replacing. Having had another look at the behaviour of the
>>>> system, it seems quite reasonable that this is the problem. As they
>>>> are stuck awkwardly behind the dash, they quote £670 all-in... that's a
>>>> hell of a lot of money to spend on a 2000 156.
>>>>
>>>> Any other ideas? In particular, is there anyone else in Cheshire / Gtr
>>>> Manchester who might be able to quote for the work?
>>>>
>>>> Oh, dear...
>>>>
>>>> Bye!
>>>> Charlie
>>>
>>>
>>
>> OK- I followed your advice Humpty. I've found the ventilation direction
>> control flap, and that's working fine. The problem is the hot/cold air
>> mixer flap; is that accessible from this area? I certainly don't see it
>> down there...
>>
>> All further advice greatly appreciated.
>>
>> Ta!
>> Charlie
>
> Unfortunately I didn't have to dig any deeper than those direction flaps,
> so I'm afraid I'm not sure where the other mixer flaps are. They can't be
> too far away - I changed the pollen filter recently (remove windscreen
> wipers and then take off the plastic cover - it's under there) and I could
> see the blower fan/motor down below underneath the pollen filter.
> Presumeably there is the heater matrix and this air control flap under the
> passengers side of the dash (on RHS version) - maybe it can be reached
> from the footwell?? Anyone else know???
>
> I've also noticed that when re-connecting the battery, there is the sound
> of moving motors and flaps from within the dashboard, as though they are
> initialising/resetting themeslves...maybe worth a try
> disconnecting/reconnecting the battery (maybe leave it 10 mins before
> reconnecting to ensure everything fully discharged?)
>
> Regarding the lowering temp shown on the gauge, again I just had this (I
> think the hot summer weather caused the thermostat to stick open) and
> changed the thermostat - now the temp sit just under halfway. But, when
> faulty, this didn't cause the blower just to blow hot all the time, so
> don't 'think' this is related.
>
> Can anyone else here confirm if this air control flap is accessable
> without having to remove the dash????
> Also, where are the locations of the temperature sensor(s) - are there any
> more than the one I can see just under the control buttons?? Could it be a
> duff sensor/bad connection??
>
> Hopefully we can save you spending £670!! Or you'll just have to keep the
> windows open
>


A quick google found this - related to 164 but quite possibly the same parts
as used in the 156
http://www.alfapro.com/