aircon bodge

weety · Post by **weety** » 12 May 2007, 23:54

the air mixture flap on my air con has failed so it blows air at at any temp it feels like (which is a bit dispiriting in the summer)

i really cant face stripping the dashboard etc out to get at the flap and was trying to think of a another bodge

i am now considering the heater hoses running into the matrix if i disconnected them from the matrix obviously there would be no hot air
coming through my heating system at all

i was trying to work out a cunning way to do this so that i could still have hot air in the winter (not that we have much a winter here anymore) and i though of pollack valves

trouble is i cant find a website for them to see if they could cope with water at potentially very high temps

does anyone know the weblink for them (or have any other suggestions as to how i could do this

Cheers

weety · Post by **weety** » 13 May 2007, 07:14

i now appreciate they are called pollak valves

and have located a website.........

Post by **RichardW** » 13 May 2007, 20:11

Does it have climate control?

If so, then the fault is probably with the cabin temperature sensor rather than anything else. I have been running mine with the sensor hanging down the dash next to the radio for about 30k miles, as I'm too tight to spend £100 on a new one

weety · Post by **weety** » 13 May 2007, 22:13

it does but i have already changed the cabin temp control to no effect.....from the way the temp of the air changes as it comes into the cabin (from freezing to boiling almost instantly) the only thing i can think it can be is the internal mixer flap to set the temp which i think is just flapping backwards and forwards....

tempting as it is to remove the dashboard to try to get to it

i am now looking at any other bodges i can think of......

alan s · Post by **alan s** » 14 May 2007, 00:07

If it's motor driven, is it possible that the polarity has been reversed causing it to spin wrong way round?
If so...................are you thinking what I am.

Alan S

weety · Post by **weety** » 14 May 2007, 00:10

sorry mate its half midnight in england and i barely know what i am thinking

what are you hinting at?....and if it works i will e mail you loads of beer!!

alan s · Post by **alan s** » 14 May 2007, 06:06

As I say, I don't know if it's fesible or logical due to modern uses of diodes etc, but if you get a 12V DC motor that is polarised + - and change it to - + it spins in the opposite direction.

Alan S

Clogzz · Post by **Clogzz** » 14 May 2007, 17:15

The aircon control board is in the space above the passenger floor, high up towards the centre.
The map shows 4 wires going to the ‘moteur volet mixage’, hopefully for 2 polarities.

Story from Peugeotlogic:
http://www.peugeotlogic.com/workshop/ws ... atcont.htm

weety · Post by **weety** » 14 May 2007, 23:23

if it span the wrong way round wouldnt the temp control just work backwards (ie hot on control = cold air)

does anyone know where the actual flap is that controls the air flow through from the heater matrix side (as it could be something as simple as a connecting rod (of some sort) that has become detached

alan s · Post by **alan s** » 14 May 2007, 23:33

From my reading of it, I thought it might be the flap that had overstretched its limits and that if the polarity to the motor that drove it could be reversed, that tis would then close it. Being a "bodge" I reckoned if this were possible, it might be simpler to get to the wires than the actual flap, but going on Clogzz link, that may not becessarily be the case.
As I say, I don't know the set up so it may be way off the mark; just a suggestion.

Alan S

Clogzz · Post by **Clogzz** » 15 May 2007, 14:38

The flap motor is visible and accessible from the passenger’s side, stuck against the carpet, at the very back of the centre console.
It’s got the metallic look as in the peugeotlogic link photo.
Faults show as hot air when not wanted, caused by loose connectors, loose mounting, slipping gears or output ‘hex’ loose.
Couldn’t have written that yesterday, didn’t know that much, found out since from French language forum.

weety · Post by **weety** » 15 May 2007, 15:52

Clogzz wrote:The flap motor is visible and accessible from the passenger’s side, stuck against the carpet, at the very back of the centre console.
It’s got the metallic look as in the peugeotlogic link photo.
Faults show as hot air when not wanted, caused by loose connectors, loose mounting, slipping gears or output ‘hex’ loose.
Couldn’t have written that yesterday, didn’t know that much, found out since from French language forum.

strewth found it......and i found a clue as well!!

anyway strange coggy looking thing located....i started the car up adjusted the temp control from one side and nothing at all happened to the cogs (are they meant to move?) with my fingers on them i couldnt feel anything moving either...

then i found a clue

.... there appears to be a mounting screw missing (implying someone else has already done this 'taking apart' bit)

so how does this controller work? it looks somewhat complicated

Clogzz · Post by **Clogzz** » 16 May 2007, 15:10

It won’t be rocket science, despite the looks of it.

Apparently a stepper motor with reduction gears to turn to flap in both directions, depending on the polarity.
There’s nothing moving around the outside, it’s all enclosed gears, except for the output shaft, which has a hexagonal driver to move the flap.

weety · Post by **weety** » 16 May 2007, 17:24

excellent i can almost feel the bodge coming together now

so (assuming i can remove the motor from underneath) i either have a knackered motor letting the flap move or a knackered power feed to it

so either replace the motor or wire my own switch into it

worse case scenario is that the motor works but but the flap has somehow become detached from the top of the driver

thanks for the help i think i will leave it to the weekend but i am a lot more confidant now

Clogzz · Post by **Clogzz** » 17 May 2007, 18:06

Removing and refitting the motor looks like it may turn into a circus, or a contest of swearwords.
From what I understand, faults are ‘timing’ between output cog and flap.
The reduction gears may slip, and the flap intermediate plate worn in the hex recess.
Maybe try the motor dangled outside, and grab the hex if and when it turns, to check for slipping gears.
Moving the temperature slider from cold to hot should operate the motor, because it looks like the flap mostly affects the flow from the heater.