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Originally Posted by demian5
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Thanks you so much, this is an amazing amount of information and I'm go8jg to bookmark this page until I die haha. Yes, it did help me, the big cylinder is the pressure control valve and the other is the expansion valve / orifice.
One other thing though, and keep in mind I did this with the old expansion valve and the same pressure regulator valve, I blew air through the evaporator core, and it seemed to be blocked. I'm not sure if the expansion valve or the pressure regulator might be blocked or have a valve that is blocking the air, or if my evap is just junked. Thanks!