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2006 Subaru Outback Question: rough idle

 

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lopo, 2.5L 4 Cylinder, Deland, FL, March 14, 2011, 15:54
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What causes rough idle when the a/c comes on?

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  • Answer #1

    DaveJHM March 14, 2011, 23:25
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     Master

    The AC causes increased load on the engine. The engine will drop in idle when the compressor .

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  • Answer #2

    dab822 March 03, 2012, 08:28
     Rookie

    worn belt tensioner allowing the serp belt to snap

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