My dad and I have a '99 Sunfire we are working on since my uncle doesn't use it and one of the few things that is wrong with the car is the air conditioning. Were hoping its not a bad pump because if it is it may not get fixed but were thinking its just a leak and I just finished going through most of the visible a/c system and found two potential leak spots. First off I don't know how accurate the leak tester is but also i was wondering if they would cause it not to work. The first potential leak appeared to be the port immediately after the coolant and the next one was the port after that. I appreciate your help.