I have never noticed my compressor cycling ever in my 420sel. Today I noticed it would cycle on and off as I was idling. Are they supposed to cycle, or is that an early symptom of worse to come?

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1984 300SD Orient Red/ Palomino
1989 560SEC
2016 Mazda 6 6 speed manual
1995 Ford F-150 reg cab 4.9 5speed manual