It sounds like you have at least isolated the problem.
Is the noise concurrent with wheel speed, meaning does it change as speed changes?
Does it change if you put it in neutral while moving and rev the engine up?
How different is the noise under acceleration as opposed to decelerating in gear, and in neutral?
There are a few possibilities;
The heat shield for the front passenger brake is bent and touching the rotor. To check this allow the brakes to cool. It is easiest to remove wheel to do this but not necessary. Then feel the area behind the rotor and the heat shield. Feel for contact between shield and rotor. Bend shield till it clears the rotor.
The axle CV joint could be going bad. Signs of this would be vibration under acceleration around 30-40 MPH. Clicking noise when making a sharp turn or U-Turn.
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Saturday, February 12th, 2011 AT 9:33 AM