Hi, I have a 1998 accord and the right rear disk brake backing plated rusted away. The other side is still good. I am getting a whining noise that gets louder as I go faster and I am wondering if the anti lock brake gear that is on the inside of the brake disc that is now exposed to the air is causing it. The wheel bearings are tight and there doesn't seem to be any more heat at that wheel that the others, so I am not thinking its the bearing. The tires are almost new Michlens, but I may switch that tire to the left front to see if its the tire, but it just doesn't seem that its the tire. Any ideas?

 

I'd check that the rear pads aren't dragging. Lubricate the slide pins with some silicone paste.

If this was my car, I'd replace the splash shield that rotted away.

 

Thanks for the reply and I will be buying a new splash guard and I was interested that you suggested the bake pads. I will grease the caliper parts, because they are easy to do, but not sure if I understand why that could cause it. But anxious to try.

 

But where can I buy a backing plate? I have checked the internet for hours and the only place I have not checked is a Honda dealer??

 

Looked at a Honda parts site. Looks like the backing plate is less than $30.

Make sure you don't use ordinary grease to lubricate the slide pins. Silicone paste works better as it doesn't dry up and also doesn't weaken the rubber slide pin boot. I mentioned brakes, because they are easy to service and about the only other spinning part next to the hub/bearing on the rear of the vehicle.

Also, when pulling the brake pads out, that the peg on the back of the brake pad (if OEM) sits in the slot of the caliper piston. Just turn the piston using a large screwdriver clockwise to align the peg into the slot. Hopefully the brake pads come out easily. If not, then the brake pads could be causing the noise.

 

Check whether the broken remains of the backing plate are rubbing against the ABS pulser ring (toothed ring). I don't think the pulser ring simply exposed to the air would make the noise.

 

Thanks for the lead. I did find the backing plate on Hondapartswholesaledirect.
I'll try what you guys suggested and see what happens.