The front end, right side i think, is making a humming noise, like when you go over a metal grate bridge, or the sound of an airplane propeler. it's not in harmony with the trans as I can turn off the car and still here the noise while rolling. it gets loude as you speed up, and winds down as you slow down. Also, if i put the ca in nuetral and brake, the front end bucks just before coming to a complete stop .... it doesn't do that if I leave the car in gear.
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Have you checked the CV Axles? Since the noise goes away turning left to right. Another slim possibility may be the brake calipers but you said humming. And I would (assume- which means not always so) stuck calipers would only make the noise in one direction.
I hate to say it, but it sounds like something in the differential - transmission. The part about the noise and coasting fits a differential bearing noise. Making turns could put extra load on the bearings and gears in the transmission.
is it like a growling noise, or a metallic "metal on metal" noise, is it clicking? when do you hear it? Common for wheel bearings to go out on those in my experience. usually you can narrow it to a wheel bearing if when you sway the car, you hear a growling noise towards the heavy end of the car, meaning if you turn to the left, causing the car to naturally sway right, the right hand tire front or rear starts making noise, thats usually a wheel bearing. If its a clicking noise while cornering and especially when corning with acceleration, thats usually a CV axle. if its a metal on metal noise, that can be a brake pad worn to low, or even just a simple backing plate to the brake rotor touching and rubbing the rotor.
humming noise usually comes from wheel bearings. did you change that with a new bearing? also choppy or worn tires can cause humming noise that sounds like bad wheel bearings. rotate your tires and see if the noise changes. if so its tires. also even if it sounds like its from the right it could very well be a bad bearing in another location.
Does the sound get louder as you drive, does it start to sound like a moaning or loud wind noise? If it does the most common problem is a bad bearing that the rotor bolts to and the axle slides through.
I think your right that its a bad bearing or hub. If your feeling it in the gas pedal and the floor, its most likely the front. If you can find an empty parking lot, try to get up to the speed it starts making the noise, and turn left and right. With the extra load being put on each bearing from turning, that will tell you which side it is.
your on the spot on both.
make sure the shock is tight on both end and have a rubber bushing bewteen the car fram and the shock. then try the shock first. take a look at spring while you have it out.
change the belt on the compressor and make sure the pulley is square on the compressor, and the any other pulley the belt goes.