1997 Ford Aerostar Only in drive

1997 FORD AEROSTAR
230,000 MILES • 6 CYL • 2WD • AUTOMATIC
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JERMAINEN
  • MEMBER
  • 1 POST
My Ford Aerostar is running great. However, when vehicle has been driving around for 5 minutes or more, and its in drive, I hear a high pitch low volume whistle coming from the engine. But only when vehicle is in drive. Possibilities? Thank you.
Aug 10, 2010 at 8:36 AM
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JACOBANDNICKOLAS
  • ✓Experienced Mechanic
  • 110,248 POSTS
Possible vacuum leak. Have you checked to see if you can tell where it is coming from?
Aug 13, 2010 at 3:09 PM
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