Air Con Problem

[Nicoll147]

Hi

We Have a 2004 54 Audi A4 the problem we are having is the Aircon is blowing cool air but not cold air

we have checked the motor and the condenser they are all fine

The pipes under the bonnet is freezing and that seems to be fine

Could it be the evaporator outflow temperature sensor

can you confirm this for us please

any help would be great please.

Matt Nicoll

[stuart]

@Crasher can you help with this issue

[JimA4B6]

G65 Sensor, i've just had to replace mine aswell, it was full of salt.

[Nicoll147]

Hi Can you tell us where the G65 Sensor is please and how to replace it please

[JimA4B6]

It is on the sid of your air con radiator, open the bonnet and look down beside the passenger side headlight. You will need to remove it and check the code, mine was 8Z0959126 but also dont buy the wrong sensor as i did by just matching the code somehow online it also seems to refer to a newer sensor which doesn't fit. i bought this one the second time around Air Con Pressure Switch 6ZL351028-401 Hella AC Conditioning 3R0959126 8E0959126 4045621463595 | eBay

[Nicoll147]

Do we have to drain the air con fluid to remove this and do we need to remove the bumber as well or can we just get to this via the Bonnet
Please let us know asap please

Thanks

Matt

[abyrne]

The wrong pipe is cold. The thicker pipe needs to be cold and the narrow pipe slightly warm. There is a cone shaped plastic gauze filter in the pipe near the filler valves that may be faulty. See my old post from a few years ago that explains. I (and others) had the same symptoms and replacing that filter cured it.

[rowdy-999]

Sorry read that wrong. The larger one should be cold. The filter is called the orifice tube.

[Nicoll147]

Hi Ian

I am pleased to say that we have resolved our Air Con it turned out that it was low on gas so we topped it up and all is good.

we now have cold air blowing.

Thanks for the tips

Matt