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Q: Squealing sound even with serpentine belt off.

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Engine squealing even after I took off the belt.
My car has an automatic transmission.

Hi there. It sounds like the harmonic balancer may be creating the noise. There may be deterioration in the rubber layer that connects the inner and outer rings. The rubber layer is there to dampen the shock of accessories engaging. There may have been oil leaking onto the balancer or the rubber layer may simply be worn and in need of replacement. Replacing the balancer may require the use of an air wrench and requires proper torqueing to prevent damage to the both the crankshaft and the balancer. Perform a visual inspection to check for cracking, slipping of the rings, or exposed/squeezed out rubber. I suggest having a qualified technician perform an inspection to avoid replacing unnecessary parts. Your Mechanic has several available technicians that can assist you with a car is making a noise inspection and harmonic balancer replacement.

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