squealing

PossessedPower · Post by **PossessedPower** » Mon May 30, 2011 2:02 pm

anyone know what this means?

willwren · Post by **willwren** » Mon May 30, 2011 2:27 pm

It means you have brake rotors on your car.

Wanna be a bit more specific? Are the squealers dragging on the rotors? Thin pads? Age of rotors? If you're more specific and detailed in your original post, you won't have to wait for us to ask a bunch of questions. Squealing is pretty general, especially when it appears you already have it apart for inspection.

viewtopic.php?f=19&t=25803

PossessedPower · Post by **PossessedPower** » Mon May 30, 2011 3:10 pm

I have new pads ,calipers and rotors and lines.
that pic is from the left side and it squeals really badly when stopping, im sure i could break ear drums.

willwren · Post by **willwren** » Mon May 30, 2011 3:53 pm

That's information that would have been good to know in your original post. I assumed the opposite (old pads and rotors)

Did you properly bed the rotors?
Did you re-grease the caliper pins?
Did you use anti-squeal compound on the back of the pads?

(these 3 steps are normal everyday routine when working with disc brakes)

What brand of pads and rotors?

PossessedPower · Post by **PossessedPower** » Mon May 30, 2011 5:59 pm

I did everything i needed to do.I don't remember what brand of rotors and pads ,i just ordered the best pads and rotors u can get and got them from napa.

Bing · Post by **Bing** » Mon May 30, 2011 6:42 pm

Is it by chance the rotor rubbing against the backing plate?

willwren · Post by **willwren** » Mon May 30, 2011 7:51 pm

We need to know more details about your caliper lube and squeak stop application. We also need clarification on the sound. Is it squealing or chirping?

2000Silverbullet · Post by **2000Silverbullet** » Tue May 31, 2011 10:58 pm

Looks overheated to me.
If they weren't broken in properly they could have burnished. Try sanding the brake pads with some rough sandpaper to remove the smooth burnt surface. Not too much. Also make sure you use plenty of silicone grease on the pad backing plates.
Follow proper break in procedures. Light stops from 30 mph about 5 times and then moderately heavy stops from 60 mph to a complete stop about 5 times, letting them cool off between applications.

00Beast · Post by **00Beast** » Tue May 31, 2011 11:12 pm

Don't completely stop dead while burnishing brakes, always slow to a few miles an hour. If you stop completely you can leave imprints in the rotor, IIRC.

2000Silverbullet · Post by **2000Silverbullet** » Wed Jun 01, 2011 12:35 am

You are supposed to come to a dead stop but do not keep the brakes depressed for more than a second and cool immediately.

Post by **Jrs3800** » Wed Jun 01, 2011 1:45 pm

I have seen time and time again where people have bought Pads that were not of the highest quality... some of the pad were too hard and caused issues with the rotors... The pads can hard spot and create these issues, and once warm they squeal like mad when you apply the brakes... Sanding them will not fix this issue...I have sanded pads before and for different reasons.. And that has worked...

From what I have gathered and understand from Jeff... There are only a few possibilities left...

Pads suck

Caliper is not sliding causing hot spots

or the Caliper piston is sticking...

PontiacBonnevilleClub.com

PontiacBonnevilleClub.com

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