Some brake issues going on...

[A.Wilson013]

Specs:
Tundra 199 Calipers
OEM Rotors/Pads with a TON of surface left. Nowhere near needing replacement.

So for awhile now my brakes have been being noisy. Squeeking almost constantly and making some TERRIBLE noises on occasion... Like when going down real steep stuff offroad when I have no choice but to "ride" the brakes.

About a month ago I took apart the rear drums, cleaned the heck out of them and inspected everything which made no difference, so I did the same to the front. Which also made no difference. Yesterday I took about the front calipers and re-lubed all of the contact surfaces after doing another deep cleaning. Again, no change.

I am 99% sure that the issue is in the front as the sound is much more prevalent up there.

Here's a video of the sound. If this hill were steeper and I could ride the brakes it would continue making that noise and reverberate much like a mountain bike disc brake. Any ideas on what I could try next? Since mods are currently funded by a sugar mama I am trying to do the cheap stuff first before just ordering some new 231's and replacing these 199s.

 

[absalom]

Contaminants in the pads. Confirm by buying, installing, and then returning some pads from local auto parts store. Once you've made sure it's your pads, grab some ceramic Akebono's from Rockauto.

I actually don't mind that noise. Reminds of living in a big city, with commercial truck brakes.

 

[ShooterMcGavin]

I still really like the sound of that muffler! Sounds a little more aggressive, without being tinny or annoying.

I agree with you about the brakes - that would drive me crazy. Isn't there some special grease (or just regular grease) that goes between the pads and the pressure plates? ...or something like that? Maybe that is what you have already greased?

 

[3bears]

id go with pads

not trying to thread jack

but brakes can be tricky....read my thread on cv axle clunk and what the noise really was

or don't

it was a strange clunk in front end that we could not find, ended up being a sticking piston in a caliper causing the pads to rock and bind and "clunk" when they pushed the piston back and got back in alingment

 

[ShooterMcGavin]

When you cleaned the front brakes, did you take the calipers off to inspect the pads? I ask because it is possible that a small stone got into one of the pads, causing that screeching sound.

 

[A.Wilson013]

I'll pick up some cheapo pads tomorrow...

I did take them off and look at them when I cleaned/lubed everything. Seemed fine.

 

[D Farms]

my brakes sound like a tuba if i barely press them.

 

[jeremyc74]

Pads would be my guess as well.

Also, when you installed the Tundra calipers, is there any chance you didn't trim enough off the dust shield? It's possible when you hit the brakes there's enough deflection up there to cause it to rub, and I can imagine that sheet metal would cause a hell of a noise. Just something to take a look at.

When I did mine the rotor on the driver's side had plenty of clearance on the inside, but the passenger side needed a little trimming.

Someone above mentioned the Akebono pads, and I will second that if you have to change them. That's what I went with and once they were bedded in they really work well. They're generating a little more dust than the one that were on it previously, but those were horrible at actually stopping the truck so I assume they were some cheap 80k mile guaranteed junk.

 

[LittleCaesar]

I thought the concept of a sugar mama is to have unlimited funding as long as one is willing to sow the seeds of love with her/be at her beck and call?

Try the new pads. Take some emory cloth and scuff up the rotors. Sly guide on caliper pins and the like.

 

[A.Wilson013]

Thanks for the advice, gents. Going to throw some new pads on and see how it goes. I'll probably continue running OEM pads unless they've gone up in price...

 

[A.Wilson013]

Went and saw my buddy at the dealership to get some pads to put on. Problem appears to be gone, but I think my calipers are on their way out because of the 8 Pistons 6 of them took A LOT of pressure to move. I was only able to move 2 of them with my hands.

Also, the drivers side caliper was much warmer than the passenger side, so I think that caliper may have been frozen up for awhile... Hopefully my moving them around by hand freed it up some.

 

[LittleCaesar]

Before I could add to my post earlier I was interrupted at work (I mean everyone should know that T4R takes priority #1) but was going to suggest a set of sticky/slow retracting pistons is something to be looked at.

You should be able to buy a rebuild kit from the dealer but somewhere I have read that the 199mms can freeze up so if you have the coinage for the 231s, then do it by all means.

Buy a small laser thermometer to measure caliper/rotor heat displacement to see if uneven wear or braking is occurring.

 

[Drcoffee]

I have done the tundra 199 brake upgrade and bought the Tundra rotors too. The stock rotors are matched to the stock caliper. The 4runner rotors were thinner than the ones on my sedan. Whereas the Tundra rotors are quite a bit thicker. You may be over extending the pistons to reach the thinner 4runner rotors. I would make two changes: buy the tundra rotors and new ceramic pads. I used the Wagner Quiet stop pads and they work great. Make sure to use the anti-squeel shims and add the disc brake quiet to the backsides of the pads.

 

[fourfive]

Before I could add to my post earlier I was interrupted at work (I mean everyone should know that T4R takes priority #1)

Thought that was a universal truth?