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2002 Mercury Grand Marquis Question: idle speed control



Visitor, Jackson, MS, January 25, 2011, 20:17

2002 mercury grand marquis idle speed control making a moaning sound.

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  • Answer #1

    January 25, 2011, 20:58

    Idle air control valves on Fords sometimes fail in a way that make them hum or moan. While the car is making the noise you are talking about, place your hand on the air filter housing. If you feel a vibration relative to the noise, then the idle air control valve has failed.

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