2007 Pontiac Grand Prix

2007 PONTIAC GRAND PRIX
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KEVSCO64
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Noises problem
2007 Pontiac Grand Prix 6 cyl

Just recently when I press the gas pedal my car makes this humming noise, What could possibly be wrong with my car?
Jul 24, 2009 at 2:17 AM
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JACOBANDNICKOLAS
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Can you tell if the sound is from the engine area or the underside of the vehicle? Does the sound chances with engine speed or car speed? Does it change when turning, stopping... Has the check engine light or any other light come on?

Let me know.
Jul 24, 2009 at 10:38 PM
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KEVSCO64
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There has been no lights to come on however, today I got in the car and it was humming when i began to press the gas pedal. It stopped after a short while. I don't hear it anymore but, I assume that this is a indication that something is going to happen If I done resolve this in a timely matter.
Jul 25, 2009 at 1:22 AM
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JACOBANDNICKOLAS
  • ✓ASE Certified Mechanic
  • 110,194 POSTS
  • ASE Certified Mechanic
What I would try is this. Remove the serp belt and start the car (only for a few seconds because it will overheat). I want you to try this to determine if the noise is coming from one of the belt driven accessories.

Let me know what you find. Please, only run the engine like this for a few secounds.
Jul 25, 2009 at 9:44 PM
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