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Ford
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2004
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Mustang Mach 1, Standard
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Repair and Diagnosis (Single Page)
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General Information
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OEM General Information
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Noise, Vibration & Harshness
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Description And Operation
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Noise, Vibration And Harshness (NVH)
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Glossary of Terms
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Hum
Glossary of Terms: Hum
Mid-frequency (200-800 Hz) steady sound, like a small fan motor. Also described as a howl.