banal

I'm driving along and the A/C is blasting very cold air as it usually does in this car. Suddenly it just stops being cold. I parked my car when I got to my destination and when I started it up it blew cold air again for the next trip.

The next day I started it up and it was cold, and 10 minutes into the trip it stopped being cold. I got to my destination and when I started driving again later it was cold again.

Any ideas?

PaulW

Which turns the compressor off for safety reason.

Try hooking up vag-com to the HVAC system and I think it would store a code.

audisowner

I had similar symptoms on a 99 A8, but turned out to be the fan motor going bad. Here's the thread:

https://forums.audiworld.com/a8/msgs/117012.phtml

Here's the fan replacement procedure courtesy of Audipages:<ul><li><a href="http://www.audipages.com/Tech_Articles/heatac/fanreplace.html">fan replacement procedure</a></li></ul>

tozoM8

If you stop, a few hours later it works again then freezes up again. Typical airflow problem.

banal

What would cause there to be not enough air flow?

banal

yeah the fan still blows like crazy

banal

hm, i'll have to try to find a vag to borrow. what would be the fix?

Always Overcharged

this is easily measured by an aircon tech.
Also check the pump is not jamming or loose belt?

JimR

Low refrigerant will also cause a coil to freeze up.