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09-21-2012, 02:06 PM
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Kouki-Monster
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Weak battery or bad alternator from factory?
I've noticed my FR-S does an RPM dip whenever it's running and I use electronics. Power windows, dip. A/C, dip. Signals, dip. It seems like the alternator is simply too weak for this car.
Does anyone have similar experience? I was rolling into the carwash last night and when I rolled the windows up the rpm dipped (annoying). So I just clicked the switch up again and the RPM's fluctuated. Just the activation of the switch alone caused a light dip. Pretty terrible if you ask me.
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Rich Anderson
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09-21-2012, 02:08 PM
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#2 | |
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Just for A/C everything else is fine
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09-21-2012, 02:17 PM
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Senior Member
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I've noticed this myself. The first time I felt the slight idle dip I immediately thought of the alternator. In traffic, I get a slight idle dip when my headlights automatically turn on.
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