Air con problems

[rabit29]

One guy says to turn the ignition on then press the demistor button but doesn't say if it's the front demistor or rear demistor, also my air cans be really cold which is great but for some unknown reason the air con can just stop blowing cold air I can drive for 3 hours with no problem then other times drive for five minutes and it stops getting cold I switch the air con of while still driving wait about 5 seconds turn it back on and it's freezing cold again has anybody got any ideas I have had id checked for gas and it's ok checked for leaks no leaks anywhere please help

 

[grey_hawk]

Your rear demister is an electrical element on your rear window.
That's what the switch is for.

 

[max101cfh]

One guy says to turn the ignition on then press the demistor button but doesn't say if it's the front demistor or rear demistor, also my air cans be really cold which is great but for some unknown reason the air con can just stop blowing cold air I can drive for 3 hours with no problem then other times drive for five minutes and it stops getting cold I switch the air con of while still driving wait about 5 seconds turn it back on and it's freezing cold again has anybody got any ideas I have had id checked for gas and it's ok checked for leaks no leaks anywhere please help

Might want to check your pressure switch, it's on the front part of the engine bay on the passenger side

 

[krusing]

Stop blowing cold air,
Or
Stop blowing air altogether ?,
If it gets that cold/freezing,
It sounds like the evaporator is freezing up,
Hence you turn it off for a little while, then turn it on again and it’s working ok.
That can indicate the ice on the evaporator has melted, then it will pass air through it again.
I had the same thing happen on my VY.

There is a couple of things to check-

• The air intake could be partially blocked with leaves and gunk, mark on the screen with a texta where the bottom of the blades sit, remove wiper arms and remove air intake plenum cover.
• “Make sure you note how it’s all installed first”
• Evaporator could be partially blocked, remove under dash cover, remove glove box, remove fan, carefully remove fan resistor, and use a torch through the fan housing and look in the resistor opening to see if the evaporator is partially blocked,
• Or see if you can get hold of a borescope and check the evaporator thought the resistor opening

If it is partially blocked, you can get a vac hose (without the hose fitting attached) through the resistor opening and vac the dust/gunk out,
Just need to be carefull you don’t flatten/bend the fins on the evaporator,
Check to see if the drain is clear,
Re-assemble and see if freezes up.

It’s a bit tight to do the above, but not impossible,
(Bit harder if you have big hands)

 

[RiffRaffMama]

One guy says to turn the ignition on then press the demistor button but doesn't say if it's the front demistor or rear demistor, also my air cans be really cold which is great but for some unknown reason the air con can just stop blowing cold air I can drive for 3 hours with no problem then other times drive for five minutes and it stops getting cold I switch the air con of while still driving wait about 5 seconds turn it back on and it's freezing cold again has anybody got any ideas I have had id checked for gas and it's ok checked for leaks no leaks anywhere please help

This was happening in my husband's VZ. He had it regassed and the gas dude said it wasn't going to work anyway because he needed a new compressor because the clutch was toast and that he could fit one for $900. My husband asked if he could just replace the clutch and the guy insisted that wasn't possible. People like that need a GPS recalibration for their ego and far be it from my husband to not supply one, so he went and removed the compressor clutch from an Alfa Romeo a friend had abandoned at our place, because it was the same size, just a little deeper and filed down that bit and proved that not only are some people d1cks, but they're ignorant d1cks at that, because now his air con works beautifully.

Moral of the story? Maybe find a compressor and give that a go if you can. And don't abandon cars at my place.

 

[Aus78Formula]

I guess someone can also tell you a Falcon door doesn't fit your C'dore, only to prove him wrong by filing it down until it fits.

 

[RiffRaffMama]

I guess someone can also tell you a Falcon door doesn't fit your C'dore, only to prove him wrong by filing it down until it fits.

It's all about perspective.

 

[RiffRaffMama]

I guess someone can also tell you a Falcon door doesn't fit your C'dore, only to prove him wrong by filing it down until it fits.

Ok, turned out easier than I thought. You even gain a little extra ventilation at the top edge of the door!


How to fit an AU Falcon door to a VX Commodore:
(Falcon door has been made purple and transparent so you can follow along at home)

Step 1: Trim excess.................................................................................................................Step 2: Remove, rotate, trim and weld. Done.

 

[RiffRaffMama]

@Aus78Formula Not even any filing involved, power tools all the way.
I think I just caught a glimpse of what I'm like to live with...