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Old 11-14-2012, 09:31 AM   #1
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Idle dip ONLY with COMPRESSOR on

So my idle dips to 500 then bumps to 800 then slowly drops back to 500. This ONLY happens when the A/C and/or defroster is on. Is this normal to dip when the compressor kicks in?
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Old 11-14-2012, 10:43 AM   #2
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So my idle dips to 500 then bumps to 800 then slowly drops back to 500. This ONLY happens when the A/C and/or defroster is on. Is this normal to dip when the compressor kicks in?
Yep. It's a bit of parasitic drag on the serpentine belt so it'll 'drag' the motor down until it recovers.
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Old 11-14-2012, 11:12 AM   #3
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This happens on all cars. . .you probably just never paid any attention to it.
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