NOSIES

  • Tiny
  • stella parkin
  • 2008 Scion xD
  • 4 CYL
  • 2WD
  • automatic
  • 48,000 miles

My car makes a whistling sound, sometimes; but only when I am NOT appling the breaks. What could this be?

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Sunday, December 5th, 2010 AT 1:17 AM

1 Reply

  • Tiny
  • mhpautos
  • Expert
  • 30,591 posts

Check that the vacuum booster is not leaking, and check for any other vacuum leaks as a whistle is normally a vacuum leak problem.

Mark (mhpautos)

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Sunday, December 5th, 2010 AT 3:37 AM

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