2002 Ford Focus Whistle noise

2002 FORD FOCUS
200,000 MILES • 2.0L • 4 CYL • FWD • AUTOMATIC
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EMNGARYFOREVER2
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  • 1 POST
When i fist start my car tempurature is low when i press the gas and get to over 40 it sound like a whistle i dont know why can you help with this?
Jul 7, 2015 at 9:55 PM
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HMAC300
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  • 48,601 POSTS
check for a vacuum leak like a line off/broken etc.
Jul 8, 2015 at 7:19 AM