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Help With My Mrs A/c

gtrkiet

By gtrkiet,
in South Australia

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gtrkiet Grand Master

gtrkiet

Posted
Posted

Hey my mrs a/c in her car hasnt been working lately thought it was the gas so i got the guy to come regas it. Gas filled up but a/c still doesnt work, the compressor kicks in but it does not go cold!!! so he put a wire from the battery to a little thing near the compressor and the air con went cold.. he said its the a/c unit inside the car it might be faulty so i changed the climate control unit with another working one and it still doesnt work!!!

BUT sometimes it decides it wants to work and it gets really cold, and sometimes it just not very cold but its cold, and sometimes it just dont feel like goin cold what so ever!! So anyone have any ideas of what this could be ?!!?!??!!?????

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https://www.sau.com.au/forums/topic/263618-help-with-my-mrs-ac/
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Dohmar Grand Master

Dohmar

Posted
Posted
Hey my mrs a/c in her car hasnt been working lately thought it was the gas so i got the guy to come regas it. Gas filled up but a/c still doesnt work, the compressor kicks in but it does not go cold!!! so he put a wire from the battery to a little thing near the compressor and the air con went cold.. he said its the a/c unit inside the car it might be faulty so i changed the climate control unit with another working one and it still doesnt work!!!

BUT sometimes it decides it wants to work and it gets really cold, and sometimes it just not very cold but its cold, and sometimes it just dont feel like goin cold what so ever!! So anyone have any ideas of what this could be ?!!?!??!!?????

Yep its a common problem with R32's

The problem is actually inside the Hot/Cold mix door actuator (aka the motor and control unit that decides how much hot/cold air to let in).

You'll find this module over the gearbox but up against the firewall between the two leg areas in the front area...

There is a guide here somewhere which tells you what to do, but its a 5 minute soldering job (to fix the dry joints)

Problem is, it takes a fair while to get to the unit - perhaps a professional can do it fast but it took me a couple of hours to get to it...

-D

Dohmar Grand Master

Dohmar

Posted
Posted
on a related subject, my work car (BF Falcon) is just out of new car warranty and occasionally over last weekend would blow a mist thru the vents......don't know if it's smoke, vapour or what the heck??!

partial leak in the heater core or an leak in the ventilation hosing leading to some precipitation inside the pipe - I would guess at a long long long shot

-D

savage GTR Rising Star

savage GTR

Posted
Posted

One thing I learnt from older cars was to leave them in vent(outside circulation) when not in use or turned off so the condesation can evaporate. If we leave them on internal circulation , the vents are closed and this can result in rusting out of the aircon/heater boxs.

Dohmar Grand Master

Dohmar

Posted
Posted
common problem in the 32's =[

Yeah... and I spent 6 months trying to figure out WTF was wrong till steve posted me that link up above with the DIY howto...

Once I had the unit out, the dry joints were very visible.. got a mate to solder them for me, took him all of 5 minutes...

Well worth doing when the heat of summer hits (last summer I had to use open-window aircon which SUCKED) but now its all done, I'm very happy to have AC back - you don't realize how much u love it till its gone

Sure, it might take you half a day but if it saves you several hundred dollars, give it a shot!

-D

Dohmar Grand Master

Dohmar

Posted
Posted
People use air cons in 32's?

Mine ran like a dogs ball when I put the air con on!

depends on how much power the engine has. yeah there is a power loss when the compressor engages but if you have 220kw then you're not likely to notice it much...

other trick is to use 'econ' instead of 'a/c' to cool the car. it just sets the compressor temperature a tad higher (2 degrees I think) and that keeps the compressor from activating as much

-D

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