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Message: <blockquote data-quote="moots" data-source="post: 415759" data-attributes="member: 219">sewell's description of the fan clutch workings is right on the money.however my description is based on your input where u mentioned that the fan is continously clutched at all times.now this condition is totally not how the fan clutch works. take a coditiion when the engine is at it's operating temp and the fan cuts in.step on the gas to approx 3k rpm and maintain at that rev.eventually after 20-30 secs later,the fan clutch will de clutch as the engine temp goes down to an acceptable temp. yes it is definitely possible for a new fan clutch to be defective.if it was dropped where the bimetallic strip sits then it is really possible damage could have been inflicted to it. the fan clutch works independantly of the thermostat.</blockquote>