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Old 01-17-2010, 12:08 PM
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Cal Learner Cal Learner is offline
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Join Date: Aug 2006
Location: Marysville, CA
Posts: 781
If the fans in the "squirrel cage" are installed backwards, it'll do what you're describing: lots of fan noise but very little airflow. Has the blower fan been worked on or replaced recently? If so, it's worth a shot to find out if the cages were reinstalled correctly.
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1988 California version 260E (W124)
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Past Mercedes-Benz:
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