Mercury Q&A

Ask Your Question

2002 Mercury Grand Marquis Question: idle speed control



, Jackson, MS, January 25, 2011, 23:17

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

1 Answer
Flag This
  • Answer #1

    January 25, 2011, 23:58

    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.

    Flag This