AC isn't blowing, hot air comes through when turned on, the green light on the AC switch doesn't even come on anymore. The noise is more of a whiny noise but then sounds like underpressure cause if I'm stopped at a stop sign/ red light- says like it's cooking off and will make a very loud POP unless I turn the AC off...when I was running it-but still makes the sound. Now I run 5WD55 but is not good with two young kids