1999 Golf GT TDI 110bhp with climate control
When it is cold codensation occurs inside the car after about 3miles and it difficult to clear.
Any ideas please. I 've had a quick look to see I there are any obvious leak into the cabin.Is it possible the drain from the cooling unit(evaporator) could be blocked? If so when is it and where does the drain come out? I checked the filter last year and it was bone dry. The carpets do not appear to be damp either.
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When was the pollen filter last changed? Difficult to clear condensation is a common result of a blocked pollen filter.
JS
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Thanks your and other replies.
I've checked the service record and he filter was changed in March of this year so it should be ok, however I will have look.
The more I think about the problem the more convinced I am that the condensate drain is blocked or restricted. The problem appeared to start last year but then I did have an a/c service so this should have improved the cooling and hence more condensate.
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My theory, backed up by what happens on my Focus, is that not all aircon condensate drains away and residual condensate in the aircon/heater air passageways takes a long time to disperse. So, if the weather is cool, when this residual condensate comes back into the car (as inevitably it must) it causes misting of the screen. Using the aircon to clear it is all very well, but it just exacerbates the problem when the aircon is switched off again.
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L\'escargot.
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You can also have a big problem in the mornings now, as the a/c won't work below 3-4 degees C. So, as L'escargot mentions, if you use the a/c all the time, then leave the car with the system wet, it will just mist up the next morning and there's nothing you can do about it until the car has warmed up.
Edited by Bill Payer on 22/10/2007 at 17:53
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i have the same problem with my golf unfortunately the cause of the problem (a/c) is also the fastest way of shifting the condensation,try running the a/c with the heater on max!
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I think some people use climate control all the time just because it's there. Once the weather starts to turn cool I stop using aircon* and just use the heater as and when necessary. That's the only way I've found of avoiding misting resulting from residual moisture in the air passageways created by the aircon.
To demist the screen without using aircon, set the heater to max temperature, and max airflow (i.e. max fan speed) and direct all the air to the screen.
*Regardless of what some people might say about aircon seals drying out and leaking, my car's handbook says switch off the aircon whenever it's not needed and I've no reason to believe that the manufacturer doesn't know best.
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L\'escargot.
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Once the weather starts to turn cool I stop using aircon* and just use the heater as and when necessary.
Me too - I've done that since I first had a/c in cars.
To demist the screen without using aircon set the heater to max temperature and max airflow (i.e. max fan speed) and direct all the air to the screen.
I don't know how common this is, but in youngest daughter's new Colt, if you do as described then the a/c comes on, but without any indication! I thought it was a fault, but the handbook confirms that it is designed to do this - took us a while to figure out why there was always condensation on the outside of the screen!
It's a bit of pain actually, as I prefer to drive with the air directed at the screen all the time and you can't do that in Colt without the a/c turning itself on.
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I don't know how common this is but in youngest daughter's new Colt if you do as described then the a/c comes on but without any indication!
Fortunately, although my 03/03 Focus has climate control, the aircon and heater can both be used manually. There is, however, a button which will bring in the cooling to (allegedly!) assist screen demisting. One of my main dislikes of the climate control is that it has a mind of it's own regarding fan speed and can produce icy blasts at max fan speed when I'd rather it didn't.
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L\'escargot.
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