My A/C is out, and I have a bad blend door actuator. I disconnected the blend door which stopped the clicking noise. Looking at the a/c system, my guess is the compressor (looks like the original Harrison R134 compressor) might of died due to an oil leak. Kind of dirty like maybe it sprayed oil and grime stuck to the oil. PO didn't feel like messing with it and unhooked the compressor. Luckily the PO unplugged it and tucked the wire + connector out of the way instead of cutting the connector or letting it dangle loose so it could get damaged. Anyhow, I have a blend door actuator on order, should be here tomorrow. The local parts stores (NAPA, AutoZone, O'Reillys) all have replacement compressors, rebuilds and brand new. AutoZone stocks a kit https://www.autozone.com/cooling-he...easons-kit-a-c-compressor/475877_157264_34477 that might be a better solution. I want to do this right the first time. Also don't want to do anything not needed. Guessing I should I flush the system? R/R drier? What about the condenser? orifice tube, accumulator? Tried doing a search because probably others have asked similar questions, but may have used the wrong words because I didn't find what I was looking for. A link to a write up is fine. A friend is a commercial/residential HVAC mechanic and has offered to help, loan tools, etc. I want to do it right and hopefully have it last several years. I am thinking I can repair the a/c without fixing the blend door right away with no issues, is this right? Guessing that the blend door just switches between inside and outside air intake. I will try to do this repair soon as possible, but if it proves troublesome to swap out as everyone says, maybe I can live with it as is for now. The a/c is a different matter. It was 103 degrees at 2 pm today so would really liked to get this done soon.