I rotated the fans with my finger. The fan on the passenger side rotates freely, but that on the driver side makes noise as if there were some leaf in the motor touching something with some period as the fan rotate.

If I drive my car with both auxilary fans dead, do I damage my car?

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1992 300D 2.5 turbo diesel. 319 k miles.
124.128 chassis, 602.962 engine, 722.418 tranny.