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I have a high pitched whistle noise in the.

Tiny
ANONYMOUS
  • MEMBER
  • 2000 FORD CROWN VICTORIA
  • 65,500 MILES
I have a high pitched whistle noise in the passenger compartment. It seems to be worse when heater or AC is on. This sounds like a possible hard one to diagnosis but I hope you can give me some ideas. Thank you.

Jack
Friday, December 21st, 2012 AT 4:14 PM

4 Replies

Tiny
HMAC300
  • MECHANIC
  • 48,601 POSTS
You may have asometing stuck inside one of hte ducts or heater itself. You might try taking blower out and looking or feelingaround in there for a foreign/loose object or one fo the floor ducts. Try to see if it whistles all the time or just when in certain areas of flow like floor, defrost etc.
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Friday, December 21st, 2012 AT 6:58 PM
Tiny
HMAC300
  • MECHANIC
  • 48,601 POSTS
Oh check for vacuum lines disconnected as well as leaking vacuum motors
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Friday, December 21st, 2012 AT 6:59 PM
Tiny
JESSE G2
  • MEMBER
  • 1 POST
Its b of sharp edges on the IAC and valves acting like flutes
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Thursday, September 12th, 2019 AT 1:53 PM
Tiny
KASEKENNY
  • MECHANIC
  • 18,907 POSTS
Thanks for posting to the site and adding your input. This post was from over 7 years ago so I doubt they got your info but maybe that will help others that have a similar issue.
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Sunday, September 15th, 2019 AT 6:09 PM

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