Why is my a/c blower fan alternating speeds?

Asked by Sep 27, 2014 at 08:42 PM about the 2006 Nissan Altima 2.5 S

Question type: Maintenance & Repair

My a/c blower motor is changing speeds by itself. When it is running on high, it will drop in and out intermittently, almost as if a wire were loose or something. It doesn't stop completely, but will slow down considerably, then kick back up again. And when it is running slowly, pushing a window button or radio button will speed it back up again. Suggestions?

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