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Old 09-30-2009, 01:11 AM   #5
DiscoStu
Sienna Red Coupe
 
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Join Date: Apr 2003
Location: Northern Virginia
Posts: 6,619
My Ride: 2013 VW GLI
I had this same problem, a rattling noise only when the A/C compressor was on. I lived with it for a little bit but it started to trigger my SES light. I eventually ended up replacing it. The noise is being caused by a bad pulley on the A/C compressor. Unfortunately, the only fix is to replace the entire compressor.
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