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Discussion Starter #1
My Insight recently developed an oscillating, squeeky noise during light braking. But when I apply full braking force, the noise goes away. The noise comes from the rear. Any ideas? It seems like the noise may have started after my IMA warning light came on, about 10 days ago, for the first time since I've owned the car. Related?
 

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It's probably brake dust or glazing.

Brakes sometimes will squeak from the dust in them. There's no good solution for it, although giving the brakes a good workout (more heavy braking) will help for a bit. A spirited drive along a curvy road should do the trick. You don't want to overheat the pads, just put a little wear on them.

You can also try pulling the pads off and lapping them. Place a piece of 180 grit sandpaper on a pane of glass, and rub the brake pads against this. Wear a good dust mask while you do this, you don't want to breathe brake dust. The idea is the same as the heavy braking. You want to break up the glazing on the surface of the pads that can form when the brakes are only used lightly.

I can understand why the Insight would get this problem, since we use regenerative braking most of the time and don't get on the binders that often or that hard.

There are various products out there that are supposed to stop the squeaking. They work for a short time at best.

Pull the front wheels and have a gander at the pads. If they're good, don't worry about the noise. Make sure that you check both the inner and outer pad on each brake.

Pulling the rear brakes is a little more work, since the drum has to come off. You'll need to block the front wheels and be on a level surface, since you have to disengage the parking brake to remove the brake drums.

While you're doing all this, bleed the brakes. It's not much work and is a good idea.

I don't see how it could be related to the IMA warning light. I'd chalk that up to coincidence, since the two systems are totally separate.

Fred
 

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Discussion Starter #4
The front brakes were replaced by the previous owner earlier this year, and the noise is clearly coming from the rear. At the time, the dealer reported that the rear shoes still had plenty of material, but I'll pull the drums and check.
 

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Discussion Starter #6
Funny thing -- the noise just went away on its own. :lol:

I pulled the rear drums to check the shoes and, as expected, they look nearly new. But if it comes back, I'll check the shocks.
 
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