Couple of questions

I was wondering if anyone could tell me what i should do for the following problems:
1. When idling my car is runing very rough. I have but in the fuel injector cleaner and i have checked them all that is not the problem.
2. My air conditioning doesnt work at all. I have asked quiete a few mechanics but they all tell me that it would cost around 3k just to fix it. Is there an easier way to get that working agian? Like replacing the entire air conditioning unit.
3. Also when i brake or i go over a bump my car makes a sound like something hit it. Im pretty sure that it is the shocks but i can't find a place where i can get new ones.
My car is a 1984 porsche 944.

Any help is greatly appreciated

Does the car idle rough only when cold outside? If so I have the same problem, for some reason the car's idle doesn't change to compinsate for temp. I don't know if my car is fucked up or if thats just the way it was designed, but I know most car's idle increase when the temperature get below a certain point.

Well i was looking around the internet and i found this online: http://frwilk.com/944dme/of.htm
could someone tell me if this is really a fix for idling or is it my car is also fucked up

1) You may have a vacuum leak.
2) Hard to say. Could be a number of things. Low charge, high charge, bad clutch, blown fuse, seized compressor, etc...
3) Sound from front I assume? Check for missing sway bar bushing on pass side and/or bad ball joints on both sides.