Try reseating all of the fans, if that doesn’t work, install OMSA with these instructions and we can check the fan rpms.
http://linux.dell.com/wiki/index.php/Repository/OMSA#Yum_setup
Try reseating all of the fans, if that doesn’t work, install OMSA with these instructions and we can check the fan rpms.
http://linux.dell.com/wiki/index.php/Repository/OMSA#Yum_setup