[Crow911]

Started car up the other morning and heard funny noise—ping, ping, etc. Drove to the office the home. Pulling into driveway and the noise was loud. Opened her up while idling in the garage and immediately diagnosed sound coming from cooling fan which was hitting the shroud. Took belt off and confirmed not play in alternator shaft. Reinstalled belt one sim loose and sound went away. Drove to office next day without noise but on way home noise returned. Took out fan, shroud, and alternator today. Confirmed no play in alternator shaft but discovered the fan was bent. New fan on order. Other than age (38 years old) what would cause this?