2000 Pontiac Montana Strange whistling noise...

2000 PONTIAC MONTANA
87,000 MILES • 6 CYL • FWD • AUTOMATIC
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NAROKSAAR
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My car makes a strange whistling noise when I accelerate. It started a few months ago and originally only happened when I was traveling over 60mph (as soon as it went over 60 it would start) now it is a more constant noise. Any idea what it could be?
Jun 15, 2009 at 11:03 AM
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JACOBANDNICKOLAS
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Have you checked for vacuum leaks?
Sep 9, 2009 at 8:22 AM
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ICECITY HOLDON
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I have a Pontiac Montana van 2001 when I press the gas pedal a whistling noise begin to make noise I change the belt and check the pulleys but that wasn't a problem so what do I do now
Feb 9, 2017 at 11:13 AM
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MHPAUTOS
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Check for vacuum leaks, often this is the problem.
Feb 12, 2017 at 2:57 AM
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STRAILER
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Hey all,

This could be a problem with a plugged exhaust system. Here is a guide to check it out

https://www.2carpros.com/articles/how-to-test-a-catalytic-converter


Please let us know what you find so it will help others.

Best, Ken
Feb 13, 2017 at 9:33 AM