rough idle on 2006 Subaru Outback

What causes rough idle when the a/c comes on?

by in Deland, FL on March 14, 2011
2 answers
ANSWER by on March 14, 2011
The AC causes increased load on the engine. The engine will drop in idle when the compressor .
ANSWER by on March 03, 2012
worn belt tensioner allowing the serp belt to snap
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