mikeylikesit105

After changing the brakes last week I started hearing a humming noise when slowing down? It only happens when I use the brakes and come to a complete stop. It's a 2008 hhr with 65k miles. I thought it was a bearing but those usually get louder the faster you go. Any help would be greatly appreciated

Mike

843de

Did you reuse the old rotors, have them resurfaced, or replace them? It sounds like brake noise caused by pads being not quite bedded in, or vibrating as they follow an existing groove in the rotor.

geg

843de rights.
Replace brake pads no enough if the rotors are twisted.
test to the rotors.

A faulty bearing howling not dependent on inhibition.

mikeylikesit105

Yes, I did reused the old rotors, But I did have them resurfaced.

SmootHHR

I've heard of this before with resurfaced rotors. For lack of a better word...the "grain" that is cut into the rotor should be the culprit. Should go away soon, but I've definitely been wrong before.

geg

after a while the surface of brake pads abraded and will take the form of the rotors surface.
but until then you have no tight seal of surfaces. This leads to an increase in braking distance - it is dangerous. Also: unpleasant sensations (vibration); car changes direction of motion during deceleration (not always, too dangerous), further disfiguring the rotors, aggravation of the situation.
test and replace the rotors. Do not be greedy - cheap, quick and easy.

Laco

Since you only hear it when you are using the brakes, that pretty much limits it to some sort of brake anomaly. Do you feel any vibrations or pulsing in the brake pedal or the car itself? Does the noise increase or get louder the harder you push on the brake pedal? My guess is, and its only a guess, is a surface mismatch between the pads and the rotor. That should resolve with use, if that is the problem.

mikeylikesit105

No pusling or vibrations of any kind in the pedal. Other than the humming the the car doesn't fell any different. If the noise doesn't go away by the weekend i'll just buby a new set of rotors. Thanks for all the help.

Mike