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Tiny
LINDANAMAYPOKE
  • MEMBER
  • 2000 PONTIAC GRAND AM
When engine is on, there is a whistling sound, why?
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Saturday, January 29th, 2011 AT 8:05 PM

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Tiny
CUP1981
  • EXPERT
Sounds like you might have an idler pulley or a tensioner pulley going bad. When the bearing inside the pulley fails, it makes a high pitch sound. Take a long screwdriver and put the metal end on the head of the pulley's bolt. Then hold your ear against the plastic part of the screwdriver and listen for a loud grinding sound. That's an indicator of a failed bearing in a pulley.
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Friday, March 11th, 2011 AT 10:32 AM

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