climate control - why is this so?

[Alex 110]

I have been running my climate control on the lowest setting recently in the hot weather and I am confused as to why the air coming out of the passenger side vents is several degrees colder than that coming from the drivers side vents??
It'd be OK if SWMBO was in the passenger seat as she can't handle the heat as well as I can, but since I'm usually alone in the car (its my work truck) it doesn't seem to make much sense.
It makes very little difference if I close the passenger side vents
Anything I can do?
Alex

[Tombie]

Clean your sensor fan... Next to mirror adjuster..

[northiam]

I had the same issue and managed to solved it.
The heater box blend flaps/doors are not shutting enough allowing hot air from the heater matrix to keep the drivers side warmer.
Open the cover under the steering wheel,
Set ac the lowest temp 16c. and cooling ac on (must be a hot day to ensure the blend flaps are at full cooling)
Engine running
Pick the white plastic clip out very small screwdriver (large arrow)
Pry rod out.
Push door/flap in direction of (small arrow) out close flap firm.
Reseat rod and click over white clip.
Done
5 mins tops:)
https://www.aulro.com/afvb/images/imported/2013/01/1225.jpg

[Alex 110]

done both the suggestions above - have to wait for a hot day to see if it has worked:D:D

[Alex 110]

done both the suggestions above - have to wait for a hot day to see if it has worked:D:D

[Alex 110]

still colder on passenger side, but I don't really care right now - once I get the replacement turbo fitted I'll be more interested in a working heater:D

[Modelsp]

Alex
i too have a problem opposite to yours
in this cold weather even with the climate control on maximum heat I'm only getting barely luke warm heat up on the windsheild
i have felt the heater hoses under the bonnet and they are as hot as the other hoses are.
any one with a clue on this would be grateful for help
cheers
Paul

[Modelsp]

Alex
I tried everything and as always the last one fixed it
i assumed that because the water to the gas converter was OK so would the heater be ok ,not so.
Heater core was blocked with Gunk i put a garden hose on low pressure on one side and got nothing on the other side only a dribble coming through the water hose into the firewall.
worked between the 2 for a bit and then all sorts of gunk came out of the heater pipes.
now that i have proper water flow through heater core all works just fine,both sides fixed.
might be something for you to look at
Cheers
Paul

[mrapocalypse]

You need to get it regassed. It fixes this problem in an instant. It's common. Strange symptom, easy fix.

Cheers

I.

[PhilipA]

Beat me to it.
Regas X2
Mine was like this and aircon guy said low gas was the cause. After he regassed it with Superchill, both sides became the same.

Regards Philip A

[northiam]

Adjust your climate controls to 16 on a low fan setting with the econo button "on" to turn off the compressor. If you can feel any warmth or difference between left and right vents then your heater matrix blend door is open/leaking, that's a fact. ;)

[northiam]

Beat me to it.
Regas X2
Mine was like this and aircon guy said low gas was the cause. After he regassed it with Superchill, both sides became the same.

Regards Philip A

I believe Superchill refrigerants are hydrocarbon/LPG flammable refrigerant.
Did your aircon guy advise you of this so you could make an informed decision to use it?
https://coagnl.govspace.gov.au/files/2012/11/232a.-VASA_HCwhite_paper.pdf

regards

[PhilipA]

Yes and I love the stuff.
Last time on my old RRC he used Hichill with a great result , but the new stuff apparently is better.
He reckons that he was told by the agent during demos which included flammability that the EU was legislating 134A out and that it was being replaced by LPG based refrigerants.
There is only something like 300 grams in the system and I have never seen personally or even heard of a failure that cases all of the refrigerant to be released into the cabin.
A sticker has to be prominently displayed on the radiator support to notify anyone that LPG based refrigerant is being used.

Regards Philip A
http://www.icis.com/Articles/2008/02/11/9096927/european-auto-chemical-industries-seek-next-generation-of-refrigerants-as-r-134a-is-phased-out-corre.html

[PhilipA]

Look we had this thread about refrigerants about 6 months ago and I don't really want to rehash it.
I guess the industry wants to protect itself so that it is not possible to be sued.
A car has many flammable items in it , petrol cars have a tank with up to 100 litres of petrol which if it were to explode would certainly cause a fire.

Many D3s and D4s seem to spontaneously combust in the engine compartment without HC12A .

According to a news report in the USA which I saw on Utube which was very anti HC12A , the maker of HC12A stated that 5 million cars in the USA had HC12A and there had never been an explosion.

To me this is a beat up like not using your mobile phone in a service station. AFAIK there has never been an instance of a service station explosion, and how many people turn off their mobile LIKE NONE Bro.

The demos that they showed on Utube were highly artificial and begged the question what about the petrol in a front end collision? The Australian site used dodgy but true stuff that the US army does not approve of flammable aircon. Well DUH! Bullets through aircon would very likely cause an explosive leak.
Can somebody advise what the replacement rate of aircon evaporators is in d2s using 134A , which runs at a much higher pressure than HC refrigerants. I will bet it is infintesimal.

Can someone find a news report please that someone has been injured by a HC refrigerant explosion inside a car? This would be BIG news and A Current Affair and all the other ambulance chasers would be all over it.

One would think that electric cars are probably much more dangerous , yet as long as they are known about there seems to be no problem.

In the wired world I googled it and no Hits at all. Surely if it is so dangerous someone somewhere has been injured other than some technician in Noosa who somehow breached the aircon while working on the alternator????? I don't think I would like to be paying for his sevices.

The pro case for HC. the NSW government does now NOT prohibit its use.
Auto Motive Air Conditioning Gases | R134a | R12 Freon | HFO-1234yf (http://www.airchill.net.au/auto-motive-air-conditioning-gases.html)

Regards Philip A

[northiam]

To good hear you made a considered decision to use hydrocarbon in your D2
Just a couple facts than your friendly aircon guy may have failed to mention or doesn’t know.

Your D2 has aluminium in-dash evaporator (<0.5mm wall) that has an o ring connection for the high pressure inlet to the thermal expansion valve (TEV). If it leaked almost the entire system charge of flammable gas can enter the cabin. Leaks on the low pressure/cabin side can be total system charge leaks due to faulty compressor valve or TEV.

Total system charge is 725g or in my case with rear ac 925grams with many more in cabin connections (thou HC would require less charge). Likelihood of leaks very low. Possible outcome severe

One of these canisters is 220g of LPG for reference!
Gasmate Butane Gas 4Pk - 220g - BCF (http://www.bcf.com.au/online-store/products/Gasmate-Butane-Gas-4Pk-220g.aspx?pid=124239#Cross)

HC12a was developed for CFC R12 replacement, your RRC for example. An ac system designed for R134a will be more efficient and effective using R134a than HC12a

Hc12a runs slightly higher pressure than R134a

No car manufacturer anywhere uses or recommends hydrocarbons HC as refrigerants

Any highly flammable refrigerant planned for use in car ac will be through a primary loop where that gas does not enter the cabin space.

The new refrigerant planned HFO1234 is more than 3 times vol% less flammable than propane/HC12a and requires a much higher ignition temperature.

HC12a is more flammable than acetylene.

From the link you posted.
One was to use the fluorocarbon R-152a (CH3CHF2). R-152a has a GWP of 140 however, because it is flammable, it cannot be used in systems of the kind now found in cars. Instead, the AC unit must be equipped with an isolating secondary loop so that passengers are never endangered, meaning added weight and expense.


No I haven’t heard any reports of fatalities resulting from the use of HC refrigerants be there are plenty of frontal collision stories regarding fires etc.

VASA don’t recommend HC and warn against it!

The cost difference between recharging with R134a and HC’s is under $200.

R134a or a new drop-in replacement will be around for decades to come.


No brainer really

Regards


http://www.1234facts.com/wp-content/uploads/2012/06/sae_world_congress.pdf

HC-12a - Wikipedia, the free encyclopedia (http://en.wikipedia.org/wiki/HC-12a)

[PhilipA]

From the Hychill site the mass of gas for a Discovery 2 with single air conditioning is 210 grams.


Total system charge is 725g or in my case with rear ac 925grams with many more
in cabin connections (thou HC would require less charge). Likelihood of leaks
very low. Possible outcome severe


So the possible outcome is probably quite a bit less severe.

Regards philip A

[OffTrack]

From the Hychill site the mass of gas for a Discovery 2 with single air conditioning is 210 grams.



So the possible outcome is probably quite a bit less severe.

Regards philip A


Factory spec for front only is 700g -/+25g. How does Superchill achieve a complete fill with 210g?

Add: dumb question really - lower molecular weight.

[clubagreenie]

You use far less by weight of Hychill by comparison to other gasses.

The lubricants, I've been told contain a ignition/fire retardant.

I've seen quite a few systems converted to run on it, well as converted as needed. Which just means filling, on imports mostly which come in drained and has always been reliable, gets colder than 134 and seems to place less load on the system when running.

If people listened I'd have it in mine now instead of them being ignorant ****tards who also manged to destroy my winch and auto while doing smash repairs.