Feb 072014

even after it’s warmed up it makes high pitched whistling noise off and on for a while. what do you like it might be.

  One Response to “2004 ford expedition”

  1. could be a belt, alternator or air conditioner.

    Remove the belt and run the engine and if the noise goes away, you have narrowed it to just the belt and what it attaches to. put the belt back on and when the noise starts, spray a bit of WD-40 on it and if the noise quits, replace the belt.

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