Same thing happened to me on the ac issue. Its the main vac line feeding the control modules under your dash. The 3 way vac valve on top of the supercharger has a thin black hard line that heads to the fire wall. Then runs along the fender near the battery then back to the firewall. Somewhere on that line it's either cracked or the coupler fittings that splice the line together are leaking. Inspect those real good. Hope this helps