# Whistle Sound 89 Bronco

**URL:** <https://community.cartalk.com/t/whistle-sound-89-bronco/24435>\
**Category:** Maintenance/Repairs\
**Created:** [January 5, 2009, 8:56pm UTC](https://community.cartalk.com/t/whistle-sound-89-bronco/24435 "2009-01-05T20:56:39Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![arizonabronco](https://avatars.discourse-cdn.com/v4/letter/a/9fc29f/32.png) [@arizonabronco](https://community.cartalk.com/u/arizonabronco)\
**Post date:** [January 5, 2009, 8:56pm UTC](https://community.cartalk.com/t/whistle-sound-89-bronco/24435/1 "2009-01-05T20:56:39Z")

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Hi–I have a 89 Ford Bronco XLT 5.8/351. It started whistling yesterday(like a tea kettle) through the dash. It lessens/disappears ONLY when I accelerate. It does not seem to be affected by braking and, it gets loud when I am idling or when I decelerate. It is driving normal otherwise (oil pressure normal, running cold, starts right up, no rough idle, no hesitation)–any ideas? Doing some research points to a vacuum leak or brake booster. I had the brake booster replaced 6 weeks ago. I lifted the hood, and listened at each footwell inside the truck–can’t pinpoint where it’s coming from. Again, it is driving fine at this point, but the sound just started. I know I am probably going to have to take it to my mechanic, but I like to have an idea before I take it in. Thanks in advance for any advice.