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Sorry forget to mention it in the motor.
There are many causes of such whistling noise coming from a motor. These includes but are not limited to:A broken brusher rubbing against the commutator.Loose bearingsA damaged armature winding rubbing against the field windings.
it could be the idler puller rubbing on the bearings. we had to replace it on our 2006 Chevy trailblazer ext.
A whistling noise indicates a vacuum leak.
A chirping whistling noise!
This sounds like the AOS - air oil separator.
what does the sound sound like? A whistling a clunking a cherping, a banging, or a squealing. And what part of the lower motor, driver or passenger, and hopefully one of your lower bearing are not going on you.
A bad compressor belt can cause a whistling noise while running the air conditioner. A bad engine can also cause this noise.
whistling noise from engine will be caused by a leaky gasket,sucking air. this is usually the intake manifold gasket
it possible is the blower motor is going bad or the blower motor squirl cage is rubbing Most likely there is debri in the blower motor cage, usually mice get in there.
The noise is caused from lime and rust build up inside the shower head. Soak it for 24 hours in CLR - that should work.
The differintial is starting to wear...