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2007 Pontiac Grand Prix

Tiny
KEVSCO64
  • MEMBER
  • 2007 PONTIAC GRAND PRIX
Noises problem
2007 Pontiac Grand Prix

Just recently when I press the gas pedal my car makes this humming noise, What could possibly be wrong with my car?
Friday, July 24th, 2009 AT 2:23 AM

1 Reply

Tiny
MMPRINCE4000
  • MECHANIC
  • 8,548 POSTS
It is most likely a pulley or bearing on the accy. Side.

With engine cold, remove serpentine belt and run engine for no more than 20 seconds. If noise goes away you have isolated it to one of the drive pulleys.

Grasp each pulley with belt off, engine off. Look for any movement in pulleys.
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Sunday, July 26th, 2009 AT 8:20 AM

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