If you have the factory tow package, it has a mechanical fan also. Something has definitely given up the ghost and needs to be remedied before it tears loose. Sounds like the water pump bearing or the fan clutch bearing.
91 YJ Sahara, 4.0L, AX-15/NP231, D30/D35@3.07
12 Cherokee 4x4,3.7L,42RLE/MP1522, D30Memail@example.com
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