i don't notice it that much, i only put the AC on when im on the freeway with the cruise control on
around town i wouldn't even bother, you gas mileage would cut in 1/2

 

iv only used the ac 2 times thisyear and the temprature in toronto was 40 C with 80% hunidity so it said it it felt more like 50C which is crazy hot. but becides that no ac ever

 

I feel your pain. Summer here in Nashville has been nasty hot and humid. Just moved here from Las Vegas, and this is much more uncomfortable.

I usually drive the guys at work to lunch (2000 A4 1.8TQ) a few times a week. As long as we're moving, the A/C is great. When we stop for traffic, the compressor cuts out and blows uncooled outside air. Here's why (I think, I'm no mechanic):

The coolant fan on my car doesn't work. The fan is bad, because I tried direct wiring from the battery to the fan and it doesn't run. When stopped, the refrigerant gets hotter, the pressure goes up, and the high pressure switch cuts off the compressor to protect the system. This past weekend, I bought an electric fan from a junkyard (early 1990s Mazda), and installed it in front of my radiator/AC coil. I wired the fan to the factory wiring for the coolant fan, and it runs perfectly when the A/C is on. It doesn't cool as well as the factory coolant fan, but it took about 2 hours to fabricate mounts and install, and cost me less than $20. To replace the factory fan is a major pain, and probably expensive like everything else on the car. At some point I'll put in the correct fan, but for now I'm staying a little cooler.

 

im in FL. i have no choice but to use a/c during the day!! lol .. specialy coming home from work stuck in traffic with the heat and humidity.

 

at least yours works.

 

Ya I noticed this too the acceleration felt very sluggish but then I thought, maybe I'm just going crazy and imagining things? Every other car I've been in the difference isn't even noticeable but I guess for audi it makes a huge difference

 

haha yea, but when i'm going to school or work i don't like to come in sweating and uncomfortable

 

Hi cougar dave, wise move there... but the thing is that my fans works good... i guess that you got the point there about the high pressure switch, but... what do you think that i can do about it, if my fans works ok and the compressor stills shuting down?

 

I use my AC in situations where its bumper to bumper and there is no air coming into the car. Otherwise I dont use my AC because the pulley is on its way out anyway.

 

When you say A/C off do u mean the ECON button on or do you mean the whole climate controll system off?

Sounds interesting, will be trying my car tomorrow with it off.