Why is there noticable vibration when you are idle & rattle with AC on on 2010 Honda CR-V

When you are at stop light/sign the car noticably virbrates and rattles on the left side when teh AC is on

by in East Hartford, CT on August 28, 2014
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1 answer 1 comment
ANSWER by , August 28, 2014
Motor mount(s)!
COMMENT by , August 28, 2014
what is the fix? why would there be a rattling noise when the AC is turned on?