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A/C stops working


doc_travis
11-19-2006, 09:34 AM
I have a 2001.5 Passat with 75,000 miles on it. My climatronic A/C will blow cold air and then it will just start blowing hot air. Sometimes I can turn the A/C off for a few minutes then turn it back on and it will blow cold air but this does not always work. Any help so that I do not have to take my car to my terrible VW shop in town.

MT-2500
11-19-2006, 10:51 AM
I have a 2001.5 Passat with 75,000 miles on it. My climatronic A/C will blow cold air and then it will just start blowing hot air. Sometimes I can turn the A/C off for a few minutes then turn it back on and it will blow cold air but this does not always work. Any help so that I do not have to take my car to my terrible VW shop in town.

Welcome to AF on your first post.
First thing would be to check for low R-134a.
If you do not have a good set of low and high AC gauges.
Any good repair shop can do it for you.
You will need to find some one with one of these.
http://www.ackits.com/merchant2/merchant.mvc?Screen=PROD&Store_Code=AMA&Product_Code=66773

http://www.ackits.com/merchant2/merchant.mvc?Screen=PROD&Store_Code=AMA&Product_Code=DIY-STARTER1

http://www.ackits.com/merchant2/merchant.mvc?Screen=PROD&Store_Code=AMA&Product_Code=DIYADVANCE

Post back your pressure readings

AND SAY NO TO THEM

Wal Mart DEATH KITS. :grinyes: :grinno: :lol:

You cannot properly and safely recharge an air condition system with them.

The one side stop and go gauge does not tell you what your system is doing or is over charged or undercharged.
A overcharged or malfunction air condition system can reach over 500 lbs of pressure.
Enough to blow up that can or system and freeze you at first and the burn you or blind you and if any propane /butane in there blow and light you up.

The stop leak crap and who knows what kind of oil in the kits there will stop your system for sure.
Just like pouring super glue in it.
And some kits even contain freon with a butane mixer.
Good for a big blast.

If you are going to do it do it right and safe.
Here is what you need to start with.
http://www.ackits.com/merchant2/merchant.mvc?Screen=PROD&Store_Code=AMA&Product_Code=66773

In the older days you could just throw in a can and go.
But over the years just adding freon is getting harder to do.
Newer systems have to have the correct amount of freon down to the ounces.
Most will need pumped down and vacuumed down and the right and amount of oil and a set amount freon charge installed to get the air to cool right and the system to last.
If an air condition is low there is usually a leak that needs fixed and also a lose of lubricating oil from system.
Also air and moisture enters a low system
If you are going to try to do it get the proper type air condition gauge set with the low and high side gauges.
Hook up the gauges and get a reading with compressor running at idle and at 2000 rpm on the high and low side.
Post back pressure reading and we can help you.
MT

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