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2000 Pontiac Montana Strange whistling noise.

Tiny
NAROKSAAR
  • MEMBER
  • 2000 PONTIAC MONTANA
  • 6 CYL
  • FWD
  • AUTOMATIC
  • 87,000 MILES
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?
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Monday, June 15th, 2009 AT 11:03 AM

4 Replies

Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,747 POSTS
Have you checked for vacuum leaks?
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Wednesday, September 9th, 2009 AT 8:22 AM
Tiny
ICECITY HOLDON
  • MEMBER
  • 1 POST
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
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Thursday, February 9th, 2017 AT 11:13 AM
Tiny
MHPAUTOS
  • MECHANIC
  • 31,937 POSTS
Check for vacuum leaks, often this is the problem.
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Sunday, February 12th, 2017 AT 2:57 AM
Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 47,643 POSTS
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
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Monday, February 13th, 2017 AT 9:33 AM

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