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Message: <blockquote data-quote="AnEffinCookie" data-source="post: 7400196" data-attributes="member: 634556"><p>When the A/C compressor's electromagnetic clutch is engaged it definitely draws some juice to keep that sucker locked in. Plus the a/c relay engages the fan for the engine and the cabin blower motor, that draws some current too. The amount of normal voltage drop is something I do not know, but it should not drop too much. Check around online or check a friends car and see how much the voltage drops when the clutch is engaged. Could be nothing, unless it is a lot, then there might be a problem with the battery or alternator.</p></blockquote><p></p>

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