2000 Mercury Sable noise from directional control

2000 MERCURY SABLE
71,000 MILES • 6 CYL • FWD • AUTOMATIC
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BILL KILIMNIK
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  • 1 POST
when heat is selected and direction is for feet or dash vents,a low pitch whistle sound comes from the control area
May 25, 2010 at 8:48 PM
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BLUELIGHTNIN6
  • ✓ASE Certified Mechanic
  • 16,542 POSTS
  • ASE Certified Mechanic
could have a vacuum line leaking. the heater system uses vacuum lines behind the dash to switch between the different positions.
May 25, 2010 at 8:52 PM
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