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· Slowly but Surely
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Discussion Starter · #1 ·
I recently decided to resurrect my air conditioning system in my car. Upon doing so, I decided to stick with the R-12 refrigerant. I knew my car had a leak so I carried it to a shop and let them put in the R-12 along with a dye to detect the leak. I finally discovered that it was leaking from the dual pressure switch.

My question is, im changing both the dual and high pressure switches and I'm not that entirely sure as how to go about it. If I take out those switches will freon come out or do I have to do something before then proceed to uncrew it.
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