Vibration during braking????

you dont allways have to replace the rotor disk. just get it machined down.

 

Your truck is probably getting ready to explode. I suggest practicing your tuck and roll.


You can either get the rotors turned or buy new rotors..I actually find it easier to spend a few extra bucks and just buy new rotors. Saves me the time and hassle of taking the rotors to a shop to have them turned. My time is worth more to me than those few extra dollars.

 

I bought my 2000 Tacoma with what I thought were the classic symptoms of warped front rotors - lots of vibration when braking, pulsing felt in the brake pedal. Shave off a hundred bucks and problem will be fixed in an hour - so I thought. I changed out the front rotors and pads and absolutely no difference. Hmmm - pull the parking brake when driving about 20 mph and sure enough, vibration. Changed out the drums and shoes in the rear, no difference still. After reading through this and other posts, would you all agree on rear wheel bearings being the next on the list to replace? Thanks for your help.

 

Could even be something loose. What you did should have taken care of it.

 

I have the same problem now. Rear vibrated BAD under breaking, took them off and replaced with new ones. just as bad. Returned them and had my old one machined down, and it went away 80-90%. Im thinking I may switch out my drilled/slotted rotors with the stockers I took off, along with the old pads and see if it happens again.

 

This is the only post that anyone with this problem should e paying attention to. All these other idiots talking about brakes and rotors are clue less. Oh course some idiot who worked with brakes thinks it's te breaks! People ave changed their f'n brakes and rotors flippin 5 times jack ass, it aint the brakes! Fools everywhere!
Anyway, what was the fix? I know It wasnt the brakes

 

My 98 had this issue. Problem, worn u-joints on the steering shaft. Replaced, problem solved. Every Taco is unique.

 

If you read post #18 it solved my Toyota issue. Two years later still no vibration, but hey what do I know I am a "idiot".

 

You are not the idiot bud, but you see how the break pads etc dont fix the prob and it was something else? these other idiots who just want to post a simple, un- thought-out solution, don't apply themselves to deeper critical thinking to help anyone out! Come on guys! This is the only place on the web to find solutions, lets make them accurate! I'm going to check the bearings . Btw tacoma world, i hate my 2002. Tacoma's suck d i ck after 1998. I miss my 98 that toyota held me at gunpoint to take from me. The truck was perfect and i never had one f'in issue, now this POS 2002, has all these little fuc'n probs. Screw anyone who thinks newer is better. Venting!

 

did they replace the pads as well? ...or did they reuse your existing pads?

i have the same issue. ...rear brake vibration. i had the drums machined down. ..but used the exisiting pads because they were only slightly worn. ..but i still have the vibration.

i'm about to install brand new drums and pads to see if that helps. ..apparently you cant just do one or the other. ..and i've always been of the opinion that you should replace pads anytime you get your rotors/drums turned or replaced. ..it just makes sense. ..but for some reason, i was talked out of it. ..won't happen again.

 

didn't see this post. ..it answered my question about reusing the existing pads.

have the drum resurfaced or replaced and start with new pads. ..that should take care of any vibes in the rear.

 

maybe if you get cross drilled rotors will help , along with ceramic brake pads. I did it and the shaking is gone , so far so good .

 

I'm having similar issues on my 01 Prerunner. If it was thrust rods or bearings for that matter, why would my *new* brakes feel great initially then vibrate (over the course of a few months)? You would think the vibration would be instant even with new brakes (rotors, calipers and pads)?? no?

 

As far as I know, that truck still has a speed specific vibration, present under a load or when less so, when coasting. He seems to notice it more under breaking from higher speed through about 50mph. His commute is I95 so he is constantly on the gas, then the brakes. Until I road with him, I don’t think he detected that it “may” also have a vibration while accelerating or going uphill.

It is a 2-wheel-drive, five speed, 2008 (I think) base model. It has synthetic oil in the rear differential. I don’t know about the transmission, probably whatever the dealership uses when doing scheduled services. Two local dealerships confirmed they could feel the the vibration, but found or offered no solutions, except to change the brakes or tires.

I suspect he has an out of balance drive shaft. There is no apparent worn u-joint clunk or whine. Since it has run dependably for 300k miles, and he is cheap, there has been no attempt to remove and balance the drive shaft.
Drums, shoes, pad, and rotors have been swapped twice, that I know of. I think he is on his third set of tires. He rotates his tires fairly regularly, and they seem to wear pretty evenly. I doubt wheel bearings have ever been addressed, but again this truck has done it since it was fairly new. Nothing about the bearings were found to be unusual during brake jobs.

I have never looked to see if there are wearing parts in the front end, to allow the BMW type toe out situation. I posted here, because I figure someone would know (and respond) on what the front suspension might have to do with vibration.

So, my next parts swapper, unscientific guess (as it applies to my friend's truck) is a drive shaft. We will probably never know, unless it shakes untill it falls off. Then, he will consider replacing it.

 

My shade-tree logic tells me bearing issues tend straighen up under braking, if the rotors are true.

Rotor and drum issues usually go away (for the most part) when off the brakes, unless they wildly out-of-wack. Brake issues are most often felt through the pedal.

The truck vibration I was writing about, is felt in the steering wheel...according to the owner. And again, he thinks it is most pronounced during braking at about 51 MPH (and at selective higher speeds too). I contend it can be felt over in the passeger seat and is subtley present when costing or powering througth that speed also.

Real sticky track break pads sometimes feel "jerky" (to me) on worn rotors. New rotors (and drums) have to have the mill marks worn off to get full contact with the pads. Should happen in a short amount of braking. After that point, I can only guess that there may be more friction and some sort of grabbing on portions of the rotors. I would check to make sure there is no loseness in the brake carrier (caliper bracket) and guide pins.

Someone suggested ceramic pads. If I'm not mistaken, ceramics tend to be lower in friction until heated up. Maybe your experience with new rotors is similar to his, where less initial grab reduces how pronounced the vibrations feels. I'd still be interested to hear if something somewhere in the suspension or the carriers is lose.

This is all hillbilly speculation on my part.

 

Its not the driveshaft. IF the driveshaft was vibrating it would only do it under engine load or if its really messed up (doubt it if its a street queen) all the time, not under brakeing.

I would start checking bushings, tie rods, and all the front end parts.

 

I want to bring this thread back to life. Just recently bought my tacoma, great deal so I got excited and didn't pay much attention to the brakes I guess anyway, I feel vibration oh when I am scowling down using the brakes, more in the seat now the steering wheel and it's also felt by my wife in the passenger seat. I hate to waste money trouble shooting a problem but it seems like I should start at the rear brakes. The truck is a 2000, has 121,000 miles on it. 4 cylinder automatic 4x4 access cab. If I start at the rear brakes how difficult is changing the rear drums and pads. I have some mechanical abilities, and the basics when it comes to tools. Thanks in advance.

 

Rears are slightly more complicated than the front, but easily doable. Mine has over 120k miles on original '99 rear shoes. I bought some to change them and when I pulled the drums I saw that they were in good shape, 3/4 life left. So, most likely the culprit is the front brakes. If the steering wheel has any shimmy when braking then start there. A set of pads and rotors is cheap compared to the consequences of not fixing the issue. If you're gonna keep the truck forever, you may wanna look into the Tundra upgrade if you have 16" wheels or bigger.

 

Yikes Frank. Seems like you covered everything. At this point I would call Toyota Corporate and keep asking to talk to a superior until you get to the top. Threaten to sue the living crap out of the company and express how GD dangerous it is to have faulty brakes EVER in a vehicle. That company will not help you if their flaw in braking design kills someone, and it will. Holy hell, when I had the problem, If i stopped for a pedestrian and the brakes failed, they would be a pancake. Toyota should reimburse you for all the work you had done and the work needed to make your brakes safe. No mater what. They are super rich and can easily make it right for you. I'm till 100% angry that they took my 98 tacoma from me and forced me to purchase this 2002 hunk of crap. I want a brand new 2015 tacoma LOADED Limited edition and then some for what they did, and I still will not be happy, unless they give me an exact replacement of my 98. I don't care if they have to build a new line just to re- make my exact truck. I will campaign against toyota's business ethics until I die. And trust me, I am severely damaging their reputation and and product sales by the millions. Stick it to those S bags! U need my help, let me know. Lets clash action law suit them to extinction!

 

I have the same issues. I'm thinking my problems are not necessarily from wrap rotors or drums and that it might be something else like wheel bearing issues or need bearing??

The vibration will only happen during braking at either high or low speeds. The steering wheel vibrates and the brake pedals will pulsate aswell. New front brakes and rotors were replaced about 9 mo ago. I'm pretty easy on my truck and don't go slamming the brakes (unless emergency). It seems to me brakes should last more than 9 mo, no?

BTW, my truck is a 2001 Prerunner.