VS aircon thermo..

[HO-77-VS]

Hey everyone, can someone tell me if there if a way of making my aircon even colder then it is, apperently there is a thermo switch that is unbipassable.... or is there anything i can do?

[keza87]

Moved to appropriate area

[axemurderer101]

re-gas is ur only option

[hako]

Before you regas just check that the heater tap is turning the hot coolant supply to the heater off when the dial is in the blue sector. Check by placing hand on heater pipes which are the brass 12mm pipes just to the left and above your left ankle when in the drivers seat. With the engine warm, aircon on and dial to cold (blue) the pipes should be stone cold. If hot or warm it means the heater tap is not working and this can be due to a clip which comes off near where the brass pipes are.
Hopefully this check will save you some cash.

[Hodz91]

The Aircon will work better when over 2000Rpm
Realy the only way to make it colder is better gas or just a regas. be carefull with better gas not all gases will work on Vs i got mine done for 130$ realy cold when i run it in a lowgear for a while tends to run alot better.

hope that helps a lil..

[rleong]

Before you regas just check that the heater tap is turning the hot coolant supply to the heater off when the dial is in the blue sector. Check by placing hand on heater pipes which are the brass 12mm pipes just to the left and above your left ankle when in the drivers seat. With the engine warm, aircon on and dial to cold (blue) the pipes should be stone cold. If hot or warm it means the heater tap is not working and this can be due to a clip which comes off near where the brass pipes are.
Hopefully this check will save you some cash.

i've replace the heater tap on mine but he brass pipes are still hot regardless of the switch position.

would you mind explaining a little more about ths clip? how easy is it to take the console panel covers off? i've taken panels off old nissans and mitsubishis but this is the first holden i've owned.

cheers

richard

[Hodz91]

i've replace the heater tap on mine but he brass pipes are still hot regardless of the switch position.


richard

Im pretty sure the Brass pipes will always be hot when the gas is running through them. because they push thehot gas into the compressor im pretty sure.. i may be wrong but i know on my car doesnt matter what switch setting either 1,2,3, temp is always hot.
hope that helps

[hako]

i've replace the heater tap on mine but he brass pipes are still hot regardless of the switch position.

would you mind explaining a little more about ths clip? how easy is it to take the console panel covers off? i've taken panels off old nissans and mitsubishis but this is the first holden i've owned.

cheers

richard

I've attached a photo which is not the best but you will see the 2 brass pipes - both must be cold when the heater is off - anyway, just below and to the right is the clip that comes off usually when kicked or knocked accidently. - if the pipe is hot it means the heater is turned on and heating the air going through the airconditioner. This make the aircon air warm and not cold as its mixing hot and cold air. Make sure the clip is connected to the threaded rod as per the pix.
You do not need to remove panels to access this clip - the pix I've attached was taken by placing camera where my left heel usually rests when in drivers seat.
This is a fairly common problem which some unscrupulous aircon operators will charge for a regas when they simply re-attach the clip.
Good Luck.

[rleong]

hey thanks for that. i'll have a look tomorrow. i've bought a manual off trading post but it hasn't arrived yet.

regards

richard

[Hodz91]

I've attached a photo which is not the best but you will see the 2 brass pipes - both must be cold when the heater is off - anyway, just below and to the right is the clip that comes off usually when kicked or knocked accidently. - if the pipe is hot it means the heater is turned on and heating the air going through the airconditioner. This make the aircon air warm and not cold as its mixing hot and cold air. Make sure the clip is connected to the threaded rod as per the pix.
You do not need to remove panels to access this clip - the pix I've attached was taken by placing camera where my left heel usually rests when in drivers seat.
This is a fairly common problem which some unscrupulous aircon operators will charge for a regas when they simply re-attach the clip.
Good Luck.

ahh wrong pipes i was thinkin

[rleong]

I've checked the threaded rod and the clip and it all looks ok. i turned the selector knob and can see the rod moving the lever that the clip is attached to.

i know that the heater tap is working so it looks like the control box in the pedestal might be the problem. one thing i should check is that there is actually suction on the vacuum line on the heater tap when the engine is running and the selector is turned to cold.

hopefully my workshop manual will turn up this week some time.

just want to mention that this forum is really cool with the amount knowledgeable people around. i've done lots of work of mostly japanese cars, and it takes a little bit to turn your thinking round to the way different manufacturers do things and forums like this really helps.

[rleong]

many thanks for all the help. i found this thread and followed the instructions and now, the heater tap is closed when i switch the temp to cold.

i found that the switch was not being closed at the maximum cold setting and i adjusted the threaded rod as per the thread instructions.

Heater pipes getting hot

I checked the hoses on either side of the tap and the hot side is hot and the cold side is cold. i checked the brass pipes and they too are cold when the temperature selecter is set to cold.

i checked the vacuum switch and it is definitely closed with the engine running (suction being applied) so i am a very happy camper. i'll confirm this when i get a chance to take it for a longer drive but at the moment, it is looking good.

[kopper69]

See I half suspect the brass pipes get hot anyway. My heater tap is brand new genuine from holden + the pipes going to and from the heater tap. The valve works - opens and closes the heater tap, but the brass hoses are still hot.

[hako]

See I half suspect the brass pipes get hot anyway. My heater tap is brand new genuine from holden + the pipes going to and from the heater tap. The valve works - opens and closes the heater tap, but the brass hoses are still hot.

If that's the case then it's possible the heater tap is not working correctly - also I've seen where the hoses to the tap have been mixed up causing the coolant to flow thru the heater when it should be flowing thru the engine - if the pressure flow from the waterpump goes to the wrong fitting, the force of the flow can prevent the valve from closing fully. On the engine side of the tap, one hose is positive pressure and the other negative pressure.

The above applies to Executive models - not sure about models that have climate control and blend warm and cold air to deliver air at the desired temperature.

[rleong]

i'm not sure if i posted clearly but since i adjusted the threaded rod, the brass pipes do NOT get hot when the selector is turned to cold. the heater tap is now being closed off whereas before the tap was always open allowing hot water to get to the pipes.

BTW, i also replaced the heater tap to no effect. only after i adjusted the rod did it make a difference.

[hako]

i'm not sure if i posted clearly but since i adjusted the threaded rod, the brass pipes do NOT get hot when the selector is turned to cold. the heater tap is now being closed off whereas before the tap was always open allowing hot water to get to the pipes.

BTW, i also replaced the heater tap to no effect. only after i adjusted the rod did it make a difference.

Yes, you did clearly indicate that you had fixed the fault plus you gave details of exactly what you did to fix it which is excellent