Q: Air Condition and Cargo Window. on 2002 Toyota Sequoia

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Just in the pass week or two my air condition have started making noise from time to time when I turn it on. it still cool and blow well. Do I to add feon and if so how much?

The back cargo window have stopped operating up or down. Is that the motor gone or what suggestions to you have?

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(1) Answer
I have same problem. Replaced a/c compressor (twice), belt tensionor, belt, and flushed system. Thought problem was solved. Two days later, the noise came back. It sounds like a "Jacobs brake" on a semi. It's a 2004 Mercury Grand Marquis, 104,000 miles. Don't know what to do next.