2000 Volvo S80 High frequency noise

2000 VOLVO S80
180,000 MILES • 6 CYL • 2WD • AUTOMATIC
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VALLE, E
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When I step on the break, it produces a high pitch sound (noise) kind like a high frequency sound. It comes on and off whenever I step on the break. Some says it could be the break sensor from the ABS.
I changed all my tires to replace all worn out and damaged tires.
Apr 12, 2010 at 9:31 AM
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DOCFIXIT
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Most likely a harmonic pitch from brake pads and rotor contact
Apr 12, 2010 at 12:46 PM