blower motor blow at low speed could it be the fan speed
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1992 Mercedes-Benz 300E Question: blower motor blow on low speed only
Answer #1patrick mannion from Greg Solow's Engine Room, May 21, 2011, 19:01Master
Fuse 12 (15 amp) and fuse 15 (30 amp) supply power to the blower control module The control module controls the speed of the fan by varying voltage or ground to the fan, likely the module has failed.
Replyboyse, June 07, 2011, 20:30Rookie
Fan blower motor blow on low speed is the fan speeed resistor