# High pitched whistling noise

**URL:** <https://community.cartalk.com/t/high-pitched-whistling-noise/75712>\
**Category:** Maintenance/Repairs\
**Tags:** wrangler, jeep\
**Created:** [November 25, 2012, 1:34am UTC](https://community.cartalk.com/t/high-pitched-whistling-noise/75712 "2012-11-25T01:34:04Z")\
**Posts on this page:** 7\
**Page:** 1

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**Author:** ![zan](https://avatars.discourse-cdn.com/v4/letter/z/48db29/32.png) [@zan](https://community.cartalk.com/u/zan)\
**Post date:** [November 25, 2012, 1:34am UTC](https://community.cartalk.com/t/high-pitched-whistling-noise/75712/1 "2012-11-25T01:34:04Z")

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There is a whistling noise that is coming from under the hood of my Jeep. It is more noticeable on cold days. It temporarily disappears when my foot is on the accelerator or after I have been idling at a stop sign for 30 seconds. The noise starts again when I start driving.

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**Author:** ![common-sense-answer](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/common-sense-answer/32/716_2.png) [@common-sense-answer](https://community.cartalk.com/u/common-sense-answer)\
**Post date:** [November 25, 2012, 1:49am UTC](https://community.cartalk.com/t/high-pitched-whistling-noise/75712/2 "2012-11-25T01:49:14Z")

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**_Model-Year ?  
CSA_**

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**Author:** ![zan](https://avatars.discourse-cdn.com/v4/letter/z/48db29/32.png) [@zan](https://community.cartalk.com/u/zan)\
**Post date:** [November 25, 2012, 2:01am UTC](https://community.cartalk.com/t/high-pitched-whistling-noise/75712/3 "2012-11-25T02:01:30Z")

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1995-Jeep wrangler

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**Author:** ![common-sense-answer](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/common-sense-answer/32/716_2.png) [@common-sense-answer](https://community.cartalk.com/u/common-sense-answer)\
**Post date:** [November 25, 2012, 2:16am UTC](https://community.cartalk.com/t/high-pitched-whistling-noise/75712/4 "2012-11-25T02:16:46Z")

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**_Can You Tell If The Noise Is Generated By Rushing Air As Opposed To Something Mechanically Spinning Or Slipping Against Another Part ?_**

You might have to place one end of a few foot long length of hose to your ear and carefully move it around in the engine compartment when the noise is present and see if you can isolate the noise source. Watch out for hot and moving parts ! Stay clear ! Don’t have anything loose hanging from you.

It could be a vacuum leak, bearing, slipping belt, or . . .

**_CSA_**

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**Author:** ![zan](https://avatars.discourse-cdn.com/v4/letter/z/48db29/32.png) [@zan](https://community.cartalk.com/u/zan)\
**Post date:** [November 25, 2012, 2:23am UTC](https://community.cartalk.com/t/high-pitched-whistling-noise/75712/5 "2012-11-25T02:23:49Z")

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I bought a mechanics stethoscope that I will try to use to isolate. I can not tell what is generating the noise but it sounds like air.

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**Author:** ![common-sense-answer](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/common-sense-answer/32/716_2.png) [@common-sense-answer](https://community.cartalk.com/u/common-sense-answer)\
**Post date:** [November 25, 2012, 5:40am UTC](https://community.cartalk.com/t/high-pitched-whistling-noise/75712/6 "2012-11-25T05:40:27Z")

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**_The Stethoscope Will Probably Locate Mechanical Sounds Better And The Hose Will Probably Locate Air Or Vacuum Leaks Better. Try Both. Be Careful._**

**_CSA_**

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**Author:** ![Kevin\_G](https://avatars.discourse-cdn.com/v4/letter/k/65b543/32.png) [@Kevin\_G](https://community.cartalk.com/u/Kevin_G)\
**Post date:** [April 10, 2013, 4:44pm UTC](https://community.cartalk.com/t/high-pitched-whistling-noise/75712/7 "2013-04-10T16:44:19Z")

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I too am experiencing the same issues you’ve posted here “2003 w/ a Squeal” see above