Having problems with your Cars & Trucks ?
I have a 2005 Mercury Sable. When the A/C is on and you're outside the car you can hear a rattling/grinding type sound under the hood. It's not loud and probably wouldn't be that noticable to anybody who wasn't familiar with the way the car sounds. A/C seems to be working fine. Any ideas?
In most cases the noise is the bearing for the ac compressor clutch. Once the clutch bearing fails, the serpentine belt will be lost.
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