SOURCE: when engine fan engages makes loud squealing noise
OK, the motor that you are referring to has lots of cooper windings and internal parts that can become misaligned during long term operations and extreme heat situations. this noise you are hearing is basically a warning sign that is trying to tell you that this motor is failing and will go out soon.
SOURCE: heater blower makes loud noise
You need to lubricate the 2 bearings on the motor. Takes about 30-50 min to take the area under the hood apart to get to it. It is in the housing underneath the Wiper assembly. Go to benzworld.org or peachparts.com for possibly pictures on how to do that.
SOURCE: Making a loud noise sounds like Fan
ok first i want you to pull your Refrigerator and look for a part of a loaf of bread or something else that has got inyour fan. hope this helps. if you don't find anything you may have a bad bearing on one of your fans. there are to fans one under the rear, and one inside the Refrigerator that you here when the door opens and closes pay close attn: to both!
good luck sawdust46
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