This is a beginners tutorial on how your automotive (134a) air conditioning system works. Hopefully this gives beginners and diy owners an idea of how their system works and how to diagnose certain problems.

AC gauge set and pump kit:

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  1. number1hinesfeet

    Thank you so much for caring enough about your fellow man that has to do their own repairs. God bless you. Brad

  2. Saul Licea

    Replaced the condenser on my car and went to recharge the ac system, pulled vacuum but when I go to put the freon I seems like it doesn't get pulled into the system. Any idea what it could be or what im doing wrong?

  3. Shangrilah M

    Excellent! Just what I was looking for. Best instructional production on this topic I've seen yet. Helped me a lot.

  4. Sam Pantiliano

    Call it Refrigerant not Freon. I know u guys only deal with one kind of “Freon” but 134a is a refrigerant. Freon is what non mechanical people call it.

  5. Kiarash Ertebati

    Simple and straight to the point
    Thank you

  6. Mike Stavale

    Hi there, got a question for you. I just replaced my AC Compressor on my 2006 Porsche Cayenne Turbo 4.5L V8. I vacuumed the system and checked all my fuses and I can't get more than 100 PSI on my high pressure gage. I'm at a complete loss. No idea what else to try. If you can help me in any way from your experience I would truly appreciate your help 🙏

  7. Antonio Torres

    Can u drain gas or liquid by pocketing the valves

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