[SOLVED] Grinding / Squeaking noise FL Brakes

[kakacarrotcake]

Hey All,



For some background info, my car is a stock 2013 FRS with 34k miles. These noises started after I took the car in for an alignment.

I recently noticed a slight squeaking noise coming from the front left of my car that only happens while driving. The speed increases along with the speed of the vehicle, however it goes away completely under any braking.

In addition, when braking lightly at low speeds there is grinding coming from the same wheel. The grinding is not constant, it happens at one spot with every rotation of the wheel. Both noises disappear under normal and heavy braking.

I have taken the caliper, pads, and rotor off and inspected them, and cannot find any point of contact other than where the pads meet the rotor and there's nothing wrong there. I also inspected the shield for the rotor to see if maybe it was making contact with the rotor but there is nothing there either.


Any help is appreciated, I'm trying to avoid taking it to Toyota since I won't be able to afford the diagnostic for at least a few weeks.


Update: After waiting what seems like an eternity, I received my new wheel bearing yesterday and replaced it. Both noises are gone and there is no more grinding on braking.

[nos145]

interested in the answer or a potential solution as i might have a similar issue on the back right.

[kakacarrotcake]

Update: Possibly the wheel bearing. I'll be replacing it this week as soon as the one I ordered comes in.

[humfrz]

I doubt it's a bad wheel bearing, if it only makes the noise at a certain point in the wheel rotation.

It might be a warped rotor ....


humfrz

[kakacarrotcake]

Originally Posted by humfrz

I doubt it's a bad wheel bearing, if it only makes the noise at a certain point in the wheel rotation.

It might be a warped rotor ....


humfrz

That's what I thought at first, but with the wheel in the air you can feel about a mm of play where there's none on any of the other wheels. I took the rotors in to my old work and had them resurfaced after work yesterday because I thought the same thing, but no dice.

[humfrz]

Originally Posted by kakacarrotcake

That's what I thought at first, but with the wheel in the air you can feel about a mm of play where there's none on any of the other wheels. I took the rotors in to my old work and had them resurfaced after work yesterday because I thought the same thing, but no dice.

hmmm....... where is @Ultramaroon when he is needed ...... ??

We might have to bring ol @Tcoat back in off leave, to gain some insight.


humfrz

[Ultramaroon]

Originally Posted by kakacarrotcake

That's what I thought at first, but with the wheel in the air you can feel about a mm of play where there's none on any of the other wheels. I took the rotors in to my old work and had them resurfaced after work yesterday because I thought the same thing, but no dice.

Bearings are toast. You can prove it by pulling the pads away from the rotor and then with the wheel mounted, give it a spin.

Do you hear anything? You should hear absolutely nothing.

It's more involved listening for it on the rear wheels because you have to remove the half shafts.

[kakacarrotcake]

Originally Posted by Ultramaroon

Bearings are toast. You can prove it by pulling the pads away from the rotor and then with the wheel mounted, give it a spin.

Do you hear anything? You should hear absolutely nothing.

It's more involved listening for it on the rear wheels because you have to remove the half shafts.

Hey that means my diagnostic skills are still somewhat in tact! Woohoo! Plus I ordered the right part on the first try. Move over ASE Certified master techs....


Now all I have to do is wait for the stupid thing to get here.

[humfrz]

Originally Posted by Ultramaroon

Bearings are toast. You can prove it by pulling the pads away from the rotor and then with the wheel mounted, give it a spin.

Do you hear anything? You should hear absolutely nothing.

It's more involved listening for it on the rear wheels because you have to remove the half shafts.

So, what do you reckon cooked the bearing ..... ??

Something to do with the alignment .. ??

What about the other side ..??

humfrz

[Ultramaroon]

Originally Posted by kakacarrotcake

Hey that means my diagnostic skills are still somewhat in tact! Woohoo! Plus I ordered the right part on the first try. Move over ASE Certified master techs....


Now all I have to do is wait for the stupid thing to get here.

Don't drive it because that noise is the bearings generating very concentrated heat.

At least don't drive it anywhere, or so fast that you can't afford to lose a wheel.

Congrats, man!

[Ultramaroon]

Originally Posted by humfrz

So, what do you reckon cooked the bearing ..... ??

Something to do with the alignment .. ??

What about the other side ..??

humfrz

first guess? pothole peened a race.

[kakacarrotcake]

Originally Posted by Ultramaroon

Don't drive it because that noise is the bearings generating very concentrated heat.

At least don't drive it anywhere, or so fast that you can't afford to lose a wheel.

Congrats, man!

I'm only going about 9-10 miles a day round trip to and from work. Stuck in 10-30mph traffic the whole time. I won't be doing any freeway driving. Gonna try to keep it under the speed limit until that hub assembly comes in.

[kakacarrotcake]

Originally Posted by humfrz

So, what do you reckon cooked the bearing ..... ??

Something to do with the alignment .. ??

What about the other side ..??

humfrz

Originally Posted by Ultramaroon

first guess? pothole peened a race.

I actually hit a pretty massive one that was hidden in a puddle while driving through a parking lot about a month ago. felt like I was driving into a sinkhole.

[Ultramaroon]

Originally Posted by kakacarrotcake

I actually hit a pretty massive one that was hidden in a puddle while driving through a parking lot about a month ago. felt like I was driving into a sinkhole.

Hells yeah. Righteous fix.