VW Pasatt, T Reg 1999 climate control

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stevo - 06 May 2008 22:22 GMT

Hi All,

My air con/climate control seems to have given up, the heat works fine
but the cool air has stopped, is their an obvious solution to this
problem, I have been told that is due to low cooland levels????? :cry:

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dave AKA vwdoc1 - 07 May 2008 03:14 GMT

Does your Passat register the outside temperature? If so it might have a
bad sensor indicating that it is too cold outside to need the a/c.

Did you dial the climate control as low temperature-wise as it can get?

> Hi All,
>
> My air con/climate control seems to have given up, the heat works fine
> but the cool air has stopped, is their an obvious solution to this
> problem, I have been told that is due to low cooland levels????? :cry:

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stevo - 10 May 2008 21:22 GMT

hi,

thanks for your response

it is registering the outside temp on the display, the temp settings
are push button and it is showing as low, the air coming from it is
very slightly cool but not as it should b

> Does your Passat register the outside temperature? If so it
> might have a
[quoted text clipped - 12 lines]
> > problem, I have been told that is due to low cooland
> levels????? :cry:

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dave AKA vwdoc1 - 11 May 2008 17:46 GMT

You have the temp dialed down as low as it will go and still no cold air
huh?
Then I would suspect either the a/c compressor is not coming on or the
refrigerant might be low due to a leak or both.

This is just a guess on my part. <:-)
let us know what you find!
good luck too!

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later,
dave
(One out of many daves)

> hi,
>
[quoted text clipped - 20 lines]
> > > problem, I have been told that is due to low cooland
> > levels????? :cry:

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Iain Miller - 13 May 2008 01:44 GMT

> You have the temp dialed down as low as it will go and still no cold air
> huh?
> Then I would suspect either the a/c compressor is not coming on or the
> refrigerant might be low due to a leak or both.

Or one of the little electric control motors in the Heat/Vent/AC system has
given up.

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Tom's VR6 - 13 May 2008 02:33 GMT

In rec.autos.makers.vw.watercooled, dave AKA vwdoc1 wrote:

>You have the temp dialed down as low as it will go and still no cold air
>huh?
>Then I would suspect either the a/c compressor is not coming on or the
>refrigerant might be low due to a leak or both.

On a 99, it could be a really slow leak that wouldn't actually be
considered a leak. Having a shop draw a vacuum and add the freon
would be the right way.

>This is just a guess on my part. <:-)
>let us know what you find!
>good luck too!

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Lost In Space/Woodchuck - 13 May 2008 22:25 GMT

and add leak detection dye. There's a good chance it's the condenser or evap
leaking. Any "good" shop should be able to track the leak down.

> In rec.autos.makers.vw.watercooled, dave AKA vwdoc1 wrote:
>
[quoted text clipped - 10 lines]
>>let us know what you find!
>>good luck too!

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Tom's VR6 - 13 May 2008 23:28 GMT

In rec.autos.makers.vw.watercooled, Lost In Space/Woodchuck wrote:

>and add leak detection dye. There's a good chance it's the condenser or evap
>leaking. Any "good" shop should be able to track the leak down.

Isn't there normally a really tiny bit of leakage where the
compressor shaft feeds thru that could leak a pound of freon after 9
or 10 years and just need some freon added? I have had a shop draw
the vacuum on a car where the cooling has gone way down and find the
vacuum holds ok before adding freon. If it went from cooling well to
not cooling in a fairly short time, that would make an actually leak
more probable.

If/when they go to electrically-powered AC, the seal will be
hermetic. And there will be no shaft seal.

I do believe in replacing the dryer if the system gets vented to
atmosphere for a while tho.

>> In rec.autos.makers.vw.watercooled, dave AKA vwdoc1 wrote:
>>
[quoted text clipped - 10 lines]
>>>let us know what you find!
>>>good luck too!

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Lost In Space/Woodchuck - 20 May 2008 02:42 GMT

Well my 99 Passat GLX as of yet needed any Freon added in the last 104,000+
miles. But then again I leave it on "auto" mode so the compressor runs
almost all year long.

> In rec.autos.makers.vw.watercooled, Lost In Space/Woodchuck wrote:
>
[quoted text clipped - 30 lines]
>>>>let us know what you find!
>>>>good luck too!

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