I am new here and I have a 1984 El Camino, and since I got her I have been battling with the AC and heater. I have finally got them to blow through the vents, before it would only go through the defroster and floor. Turns out all needed needed to do was to plug the line into the EGR valve but the things I replaced needed replacement anyways. Now my problem is that the heater and the ac take a few minutes before they actually start blowing from the vents, and the ac isn't really blowing cold air. It is slightly cold but it feels more like a fan. Can anyone tell me what is wrong? I would really appreciate it.