06mustangGT95

At first when car is turned on during a cold start the A/C blows cold but after running the car for a while the air ends up getting warm and the smell changes. You can hear a clicking/ticking sound coming from the engine bay and everytime you hear it the a/c starts blowing cold then hot again and RPMs start jumping up and down! Idk what it can possibly be please help!

88 orangepeel notch

Well you were close lol, the Tech section specific to your year Mustang is alittle further down on the home page. I'm just telling you this because of the number of members in each section is displayed there and when I just looked there were 18 in here and 206 in the other. The more eyes that see your thread, the better advice you'll get. Good luck

Derf00

The engine bay clicking and the A/C getting cold/warm is the A/C compressor turning on/off.

The most likely culprit is you are low on refrigerant. Beyond that, without a manifold guage set or a UV light you won't be able to tell if there are any other underlying causes (like if there's a leak or if it's even low to begin with).