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Home >> Ford >> 2006 >> Focus ZX4 ST >> Repair and Diagnosis >> Steering >> Power Steering >> Steering System-General Information >> Diagnosis And Testing >> Steering System >> Steering System Symptom Definitions >> Whine
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Steering System Symptom Definitions: Whine

Whine is the general air-borne noise of the P/S pump. Whine is in the frequency range of 1 kHz to 4 kHz. Whine is generated when engine rpm, pump rotational natural frequency and pump/bracket natural vibration frequency align.

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