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#1
04-13-2007, 10:17 AM
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Noise Coming from Wheel
I've noticed this noise coming from one of my wheels, and Im pretty sure its the left rear wheel. Its more noticeable when I put the car in reverse. Basically, its kind of like a metallic scrapping noise that I hear everytime the wheel completes a revolution. And like I said the noise is a little louder when Im in reverse. The noise stops when the wheel stops obviously. What are some things I could look at? I've been told by a couple of people wheel bearings, but I wanted some other opinions.
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1994 Chevrolet Caprice Classic 4.3L 
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#3
04-13-2007, 11:35 AM
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Re: Noise Coming from Wheel
Well, I guess I could check the rear brakes...but its a police package so I have disc in the rear. I guess I could check the brakes to make sure everything is ok. I know my pads are worn out.
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1994 Chevrolet Caprice Classic 4.3L
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#4
04-13-2007, 11:48 AM
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Re: Noise Coming from Wheel
Quote:
I have the same rear axle assembly in my own car BTW (complete with the discs). In my case, I noticed this sound coming from the rear left after I replaced a rotor. The rotor was one given to me by Checker because they killed my rotor turning it. Turns out to be a cheap Chinese rotor, and the groove in the back of the rotor was not cut deep enough and was interfering with the backing plate on the rear axle tube. It also had worn axle bearings but interestingly, this did not contribute to this issue - what was happening is that this particular wheel was constantly loaded with brake dust, about 5x more than the other three wheels combined! This was due to the rotor binding in the pads due to the additional clearance. The axle bearing on the right side did create a low-pitched rumbling noise while the car was in motion - the axle shaft itself was galled where the bearing rode on it. I opted to save the $400 on new axles by using axle saver bearings. These relocate the rollers to just outside of the original path, and relocate the seal (which is contained within the bearing) to just outside of its original location.
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1988 9C1 - Modified LM1 @ 275HP/350TQ - TH700R4 - 3.08 8.5" Disc Rear - see it at http://www.silicon212.org/9c1! 2005 Crown Vic P71 - former AZ DPS - 4.6 liters of pure creamy slothness! 1967 El Camino L79/M20 old school asphalt raper Remember - a government that is strong enough to give you everything you need, is also strong enough to take everything you have.
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#5
04-13-2007, 12:29 PM
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Re: Noise Coming from Wheel
My money is on brake pads. For an axle bearing to make that much noise, you would have blown the seal and be smelling gear lube by now, probably see some sign of it on the wheel or hubcap.
See if you can get someone to drive by slowly while you stand there and listen to it just to pin point which side it is. Bob
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