Question about 2006 Pontiac Grand Prix

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High Pitch whine during acceleration

I am hearing a High pitch whine, not a whistle, when I touch the gas pedal to accelerate my vehicle. Was not there before.

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  • Anonymous Mar 14, 2014

    2002 sienna...high pitched whine for 10-15 seconds after start up....seems worse when using the heater...

  • Anonymous Mar 16, 2014

    i have a 2004 expedition, between 40-50mph has a high pitch whine on acceleration. let off throttle noise stops.checked rearend for fluid level,it was low,took about 26oz to fill it. notice seal is leaking.

  • Anonymous Mar 17, 2014

    High pitch whistle from engine

  • Anonymous Mar 18, 2014

    high pitched whining sound

  • Anonymous Mar 25, 2014

    car has whisling noise (and no it is not the be and I exchanged idlerpulley) I gets to a higher pitch with acceleration

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Well it could be a few things but most likely you belt is sliping. That is very common and happens to all cars over the years if the belt is not changed. You should check it out. The belt could be bad but it could also be a bad pully. If you dont know what these parts are look them up on google. its very simple

Posted on Nov 21, 2008

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First you need to isolate the noise. You don't mention the mileage on the car. Do you have the supercharged engine? If you do, remove the belt for the super and make sure that is not the problem. If you still hear the noise approximately below or from the super area, it is most likely the belt tensioner pulley.
In my car there was a large washer over the pulley (original equipment), as the pulley wobbled on the bad bearings, it would cause a sound like a bad alternator or gear whine getting exponentially worse the faster the engine reved. Now that the part is replaced, you can barely hear the engine idle and is significantly quieter at high RPM.
My car - 2004 Pontiac Grand Prix GTP with 66,000miles.

Posted on Dec 30, 2008

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More often than not the power steering fluid is low and that is the whine that you hear. Fill up your power steering fluid and see if it goes away. Cost about $5 bucks and will tell you if you need to spend more $$$ on something else.

Posted on Feb 13, 2009

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Could be your fan clutch.

Posted on Nov 25, 2012

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Take car to transmission shop and have the tranny flushed

Posted on Oct 23, 2008

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SOURCE: High Pitch whine during acceleration

Hi Pullerwife,

I have a few suggestions for you,

First of all, check your air filter, make sure its clean, not clogged, and doesn't need to be changed.

I don't know how handy you are, but if you are fairly handy, check the idler pulley bearings, if your not, have a shop check it out, as a last resort.

Power steering pump/fluid being low is also a possibility, but thats usually more of a lower pitched whine then what you describe.

You say once the vehicle is warmed up, the whining stops. Does Weather seem to be a factor as well?

Hope I've helped, and don't forget to rate.

Lazaruselite

Posted on Feb 25, 2009

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High Pitch whine during acceleration


Hi Pullerwife,

I have a few suggestions for you,

First of all, check your air filter, make sure its clean, not clogged, and doesn't need to be changed.

I don't know how handy you are, but if you are fairly handy, check the idler pulley bearings, if your not, have a shop check it out, as a last resort.

Power steering pump/fluid being low is also a possibility, but thats usually more of a lower pitched whine then what you describe.

You say once the vehicle is warmed up, the whining stops. Does Weather seem to be a factor as well?

Hope I've helped, and don't forget to rate.

Lazaruselite

Feb 25, 2009 | 2005 Chrysler Town & Country

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