So my bro told me that my corolla's a/c is not working. I'm assuming that I need to refill the refrigerant. How often does it need to be recharged? I'm asking because my corolla hasn't reached 90,000 mile yet. Is there a corolla DIY on air condition refrigerant refill? Also this really sucks because my van ran out of a/c refrigerant as well. The thing is that my dad brought it(the Chevy Van) into a shop and they charged $90 to get it recharged etc. Everything worked fine, until the next morning, turns out the a/c wasn't working again. So i brought it back to the shop and told them that the a/c is refrigerant is probably leaking. They recharge it again, look around for leaks and they can't find any leaks. and once again the a/c is not working because it's probably leaking somewhere. I am trying to figure out what to do, the guy at the shop keeps saying it's this a/c pump? I'm not sure if he's correct. My other friend told me that I need to get a Dye and fill it into the a/c pipe to see where it is leaking, I'm not sure how to do this either... I have a feeling this won't be a cheap fix either. My van is a 97 Chevy Venture and it only has 93,000 miles on it. Engine is still running strong, but to figure out where the leak is would be a pain in the butt because the engine bay is really small. Just wanted to see if anyone has any similar experience with air conditioning system, diy, etc. Kinda sucks that I have to drive in 95-100 degree weather. Any help would be greatly appreciated. Thanks in advance!