Hard Bouncing/Vibration While Braking

[Fadiddy]

Guys,

So I know all about the common warped rotors issues with the 3rd Gens, however, I feel as though this is not related to the rotors....let me explain:

A year ago, I did the Tundra front caliper/rotor/pads conversion...also replaced the rear drum calipers (Denso), pads (Toyota), springs/clips (Toyota), and drums (Centric brand drums - China). Basically I performed a complete brake job on the truck while upgrading it to tundra brakes as well as brake fluid flush. Brakes worked great for a while. Months later, I began to notice a front-end bounce when I would brake...usually from about 40+mph. Anything at about 30-35mph and lower, there was slight vibration and bounce....but when going over 40+mph and coming to a stop, the front bounces violently. It feels like your going over those rumble strips on the road.

I replaced the suspension (shocks, springs, isolators) a few days ago with a 3inch Tundra / OME lift as my front right shock was shot and leaking and had been meaning to lift the truck anyhow. Yet, still same thing.

Can anyone shed some light on what could be causing this?? It sucks braking like this....and I cannot figure it out for the life of me.

Thanks.

 

[Stiles97]

Sure sounds like rotors. Can you feel anything in the steering wheel ? Notice loose tie rod ends when doing lift ? Even though the brakes are fairly new ( you didn't state mileage though) it is still possible. A sticking caliper could heat up the rotor and warp it. Can you feel the vibration by using the parking brake?

 

[pauldub]

Most likely your's were broken in improperly and you probably need some new rotors.

Read about warped brake rotors being a myth: -Warped- Brake Disc and Other Myths

It's hard to kill an urban (forum) legend.

 

[cvc7chris]

i would check the rotors even if you don't think its that or maybe the calipers are causing it but i doubt it.

 

[shahsmerdis]

I cannot stress enough

https://www.youtube.com/watch?v=Yhw_d_EWrOQ

 

[Fadiddy]

Sure sounds like rotors. Can you feel anything in the steering wheel ? Notice loose tie rod ends when doing lift ? Even though the brakes are fairly new ( you didn't state mileage though) it is still possible. A sticking caliper could heat up the rotor and warp it. Can you feel the vibration by using the parking brake?

Really? From what I described and considering the brakes all around are about a year old with approx. 6k miles on them, that it could still be the OEM Tundra rotors?

The steering wheel doesn't wobble left and right like you would see with a car with bad rotors....it does however vibrate due to the entire car vibrating....primarily the front-end. Since the bouncing is coming from the front-end, technically the steering wheel will shake too.

My parking brake doesn't even work....it has not worked since I bought the car 2yrs ago.

 

[Fadiddy]

Most likely your's were broken in improperly and you probably need some new rotors.

Read about warped brake rotors being a myth: -Warped- Brake Disc and Other Myths

It's hard to kill an urban (forum) legend.

i would check the rotors even if you don't think its that or maybe the calipers are causing it but i doubt it.

So I'm confused, warped rotors would cause the bouncing of the front-end (the same feeling as going over the speed pads on the freeway or "wake up bumps" on the freeway)?? I thought warped rotors caused steering wheel to wobble left and right...no?

I cannot stress enough

https://www.youtube.com/watch?v=Yhw_d_EWrOQ

This guy in the video just talks about installing brakes, which I know how to do....I would be surprised....VERY surprised if the OEM rotors when bad this early.

 

[babygotfront]

So I'm confused, warped rotors would cause the bouncing of the front-end (the same feeling as going over the speed pads on the freeway or "wake up bumps" on the freeway)?? I thought warped rotors caused steering wheel to wobble left and right...no?



This guy in the video just talks about installing brakes, which I know how to do....I would be surprised....VERY surprised if the OEM rotors when bad this early.

for me, 2016 T4R LTD ... around 25k miles the front end started shaking while braking from 40/50mph ... got progressively worse ... took it in at 27.5k miles ... dealer here in CO (Groove Toyota) service advisor took 100% care of it ... turned the front rotors .. front pads were plenty fine ... hotspots on rotor ... he said the front rotors could probably be turned 1 more time on its life ...

thanks Groove Toyota/Kent!

 

[sjwelna]

Sounds like rotors. It's something cheap and easy to change to troubleshoot.

If you didn't want to spend the money for that try rebleeding the brakes again first and see if it helps.

When you do the rotors check the calipers and make sure one isn't sticking and regrease the guide pins.

Edit: just realized this thread was from 3 years ago.:tsk:

 

[Bad Luck]

Really? From what I described and considering the brakes all around are about a year old with approx. 6k miles on them, that it could still be the OEM Tundra rotors?

The steering wheel doesn't wobble left and right like you would see with a car with bad rotors....it does however vibrate due to the entire car vibrating....primarily the front-end. Since the bouncing is coming from the front-end, technically the steering wheel will shake too.

My parking brake doesn't even work....it has not worked since I bought the car 2yrs ago.

Does it get better or worse if you brake harder?
Do you feel it more in the steering wheel or brake pedal?
Have you checked your rear shoes/drums to see if there is any differential fluid that had leaked past your rear axle seals?

You really need to get your parking brake fixed by the way. It's the best way adjust your rear brake shoes properly and would be helpful to diagnose something like this.