Warm a/c during summer is wrong

**eWock** · 06-24-2008 01:17 AM

I've searched the forums under different options and no matching situations.
I've got an '00 B5 S4 108K miles, and my a/c isn't blowing cold much anymore. What can be done? No weird noises when a/c is on like a fan. I think perhaps a recharge? Please help because the last 4 days in the San Francisco area was freakin' 90° and up! I was baking and sweating in my suit!

**speedydragon** · 06-24-2008 01:24 AM

does your ext. temp guage in your DIS go down to really random temps when the AC is blowing warm? That's my current problem right now. I'm in SF too :|

**eWock** · 06-24-2008 06:08 PM

Nope, everything else seems to be fine. Just the cold air isn't cold.

**AudiSportB5S4** · 06-24-2008 06:20 PM

no one has answered because there have been a bunch of threads about this lately LOL. basically, long story short, go to your autopart store, buy a simple low pressure side recharge it. it may work, great, it may not. if not, you are where I am :). tomorrow i have an appointment @ a service station to fully recharge the system, oil it up and throw some leak dye in there so if it happens again you see where it comes from. that procedure will cost from 100-225 depending on your area

**S4-ORCE** · 06-24-2008 07:47 PM

Just had mine recharged on Friday. Ice cold A/C FTW

**lrg8683** · 06-24-2008 08:03 PM

if it's not a simple recharge then you probably need a new ac compressor.. which is what i ended up needing.

**AudiSportB5S4** · 06-24-2008 08:39 PM

Originally Posted by lrg8683

if it's not a simple recharge then you probably need a new ac compressor.. which is what i ended up needing.

that sucks, hopefully i dont need that! what signs did you have? I mean, I can hear it turn on, the compressor that is, its just not pumping anything cool anymore.

**gointoscott** · 06-24-2008 09:13 PM

If your pump turns on that usually is a sign that there is freon in the system. If the system is too low of freon the pump wont kick in.

Does your car blow any cooler air at all? or does it not cool at all to maybe even hot air coming out? If there is enough freon in there and the pump kicks in, then I would think it should blow a little cold. If not you might have bigger issues like a bad pump. When my pump went bad on my other aud, the pump made loud ticking noise. So if your sounds normal just little cold I bet it just needs some freon charge.

Now the next question is, did it work fine last year? usually if your freon is low that means you have a leak so you have to fix the leak otherwise it will just leak out again. Other times it may be such a small leak you can charge it and it will be fine for the summer. Also you can look at your hoses and if they are oily that is a good start to see where it might be leaking.

Lastly most states you can go to your local walmart or parts store and pick up some R134a freon to charge your system yourself with low side pressure fitting.

Which is what i wanted to do, but since I moved to the lovely state of Wisconsin they dont sell freon to consumers, you have to have a licensed freon guy do it, so that will cost you more. (we did our mini van for 80 bucks so that wasnt bad)

When I went to pick it up here at the parts store, the guy told me that it was Wisconsin and California who didnt sell the freon over the counter to consumers but he wasnt certain about California, so you can go find out, or if you are close to the border of a different state, jump boarders and pick it up there and do it. If it just needs a charge its real easy to do.

Here;s a nice writeup I had found:

http://forums.audiworld.com/s4/msgs/1716118.phtml