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Yes. Absence of the roaring noise can only be the fan clutch. When my last fan clutch failed, it didn't unlock! Therefore when the engine was hot, it would spin the fan up to redline. Fan clutch is supposed to release at certain RPM. It actually overcooled the engine. There were also a few different part numbers which locked at different temperatures. I wish mine would lock at a higher temperature. That roaring noise is really ridiculously loud when you are flooring it after sitting in traffic for a bit.
I would also look into your front aux fan. not working? Even without A/C it still should kick on at 105/110. You can jumper it directly to see if it still works. Then look into why it's not switching on (fuse?). I'm not very keen on how to troubleshoot the AUX fan.
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