Question about 2000 Pontiac Grand Am GT

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Makes a loud klunking noise in front right side after accelerating

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  • Terry Engel May 11, 2010

    When you say accelerating....are you stomping on the pedal, or slowly mashing it down?

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Check your harmonic balance

Posted on Jan 25, 2009

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When I accelerate forward from a comp stop my car makes a loud grinding/screeching by the front driver side. Once running the noise stops but until it catches speed it makes the sound. What is that?


It could be several things, and I'm going to assume that the vehicle is front wheel drive.

First possibility is the constant velocity joint on the driver's side is worn out.

Second possibility is the wheel bearing on the driver's side.

As to the shaking at 70+mph, you may have an alignment problem, or some issues with the suspension components on that side of the car.

Does the noise get worse when accelerating from a stop, and turning, at the same time?

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It starts In 3rd and when in 5th while still accelerating, a noise which sounds like it's coming from drivers front side, the best I can describe it is it sound like a commercial paint shaker shaking a...


Noises from axles can be really deceiving. The sound is transfered throuh the transaxle and can resonate through the entire vehicle. The turning to the left thing makes it sound like a problem in the right wheel/axle area. Wheel bearings and axles tend to make worse noise when they are on the OUTSIDE of the turn. More of the vehicle weight is shifted to the outside due to centrifugal force. Thus, if the noise is louder when turning left, this puts the right axle to the outside of the turn and the most likely to be the source of the noise. (and vise-versa) The fact that the noise calms down while cruising makes me believe that it is not a wheel bearing. Wheel bearings can make more noise in turns, however, they usually make a "roaring" or loud "humming" noise that gets louder with speed. An axle is more likely to change or get louder according to engine load more than rotational speed. (Way worse while accelerating or climbing a hill) I would be taking a hard look at the right axle.

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Car makes a loud klunking noise in front right side after i accelerate


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