Originally Posted by
91cavgt
Mine does the exact same thing. I too have been wondering about it. To me, it sounds like an A/C compressor starting up without oil in it. If it was coming from the belt, you would hear a squeal, not a rattle. The only way it could be the radiator fan is if there is either something physically touching the fan blades or if the motor bearings are bad. However, if it was the fan then you would hear the same noise every time the fan turned on. I am convinced it is coming from the compressor.
btw, I used to work as a mechanic. I've got 3 ASE certifications and I worked a LOT on A/C systems every summer.
Today in the morning it did it again. Analyzing the characterestics and circumstances of the noise, I'm almost convinced that it's coming from the A/C compressor. I was thinking of the clutch, but your suggestion makes a lot of sense. Let's hope that it happens at the dealer tomorrow.
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View my fuel log 2014 Mirage ES 1.2 automatic: 37.6 mpg (US) ... 16.0 km/L ... 6.3 L/100 km ... 45.2 mpg (Imp)