Notices
86-95 Trucks & 4Runners 2nd/3rd gen pickups, and 1st/2nd gen 4Runners with IFS

Rotor or bad Caliper

Old 02-20-2019, 05:49 AM
  #1  
Registered User
Thread Starter
 
Join Date: Dec 2016
Posts: 88
Likes: 0
Received 0 Likes on 0 Posts
Rotor or bad Caliper

I have been getting an intermittent shake when pushing brakes, and driving around 60, figured since it doesn't happen always it must be a caliper (Seems the shake appears more when the truck is warmed up). Pulls to the left when I brake also..

Yesterday I replaced pads pins and caliper spring.. was fine at first then I felt it again upon braking. Calipers seemed fine when I retracted the Pistons using channel locks it was pretty smooth.

Wouldnt i get a constant shake upon braking if a rotor was warped?

Thanks

(1990 4r 22re 5sp 4x4)

Last edited by Katoner; 02-20-2019 at 05:58 AM.
Katoner is offline  
Old 02-20-2019, 06:37 AM
  #2  
Registered User
 
Paul22RE's Avatar
 
Join Date: Feb 2018
Location: NNJ
Posts: 202
Received 20 Likes on 16 Posts
Is left wheel hotter than right after a ride? A bad hose can also cause caliper to stick.
Paul22RE is offline  
Old 02-20-2019, 06:59 AM
  #3  
Registered User
Thread Starter
 
Join Date: Dec 2016
Posts: 88
Likes: 0
Received 0 Likes on 0 Posts
Didn't think of that, will keep an eye on heat and Google around to figure out how to diagnose a bad brake hose. I did notice a slight tapered wear on pads but only about 2 millimeters left to right

Last edited by Katoner; 02-20-2019 at 08:24 AM.
Katoner is offline  
Old 02-22-2019, 07:09 AM
  #4  
Registered User
Thread Starter
 
Join Date: Dec 2016
Posts: 88
Likes: 0
Received 0 Likes on 0 Posts
Can the brake booster system cause something like this? I notice my brake pedal going spongier and harder again every now and then, maybe unrelated? or maybe the pedal is also due to the brake issue and not the brake booster?
Katoner is offline  
Old 02-22-2019, 07:52 AM
  #5  
Registered User
 
Join Date: Apr 2016
Location: Alaska
Posts: 1,012
Likes: 0
Received 37 Likes on 30 Posts
Originally Posted by Katoner View Post
I have been getting an intermittent shake when pushing brakes, and driving around 60, figured since it doesn't happen always it must be a caliper (Seems the shake appears more when the truck is warmed up). Pulls to the left when I brake also..

Yesterday I replaced pads pins and caliper spring.. was fine at first then I felt it again upon braking. Calipers seemed fine when I retracted the Pistons using channel locks it was pretty smooth.

Wouldnt i get a constant shake upon braking if a rotor was warped?

Thanks

(1990 4r 22re 5sp 4x4)
First off, do you feel the vibration in the seat of your pants or does the steering wheel shake?
if you feel the vibration through the seat before the steering wheel shakes you have a problem in the rear not the front.
to confirm this you could lightly apply the parking brake which applies the rear brakes only. if you feel the vibration your rear drums are warped.
this doesn't mean that there isn't an issue with the front also, just that there is definitely a problem in the rear.
you can get a pull from the rear brakes also, it is just not as common or pronounced as an issue from the front.
When you feel the vibration does it continue every time you hit the brakes and go away only after you have stopped driving and everything cools down?
When you feel the shake pull over and check all 4 wheels for heat, see if any are hotter than the others.
Jack up your truck and roll the tires by hand, any of them dragging?
akwheeler is offline  
Old 02-22-2019, 08:02 AM
  #6  
Registered User
 
Join Date: Apr 2016
Location: Alaska
Posts: 1,012
Likes: 0
Received 37 Likes on 30 Posts
Originally Posted by Katoner View Post
Can the brake booster system cause something like this? I notice my brake pedal going spongier and harder again every now and then, maybe unrelated? or maybe the pedal is also due to the brake issue and not the brake booster?
Maybe, it could be from excessive heat from a brake dragging causing the fluid to boil (especially if it is very old fluid).
For the best most consistent pedal feel you need to be sure your rear brakes (including the parking brake) are adjusted properly and that there are no other brake system issues before you condemn the booster.
make sure to check your hoses at each wheel and at the rear axle for blisters/cracks or other damage. you can't check inside for a collapsed liner but that would cause a brake to either not work or to not release.
akwheeler is offline  
Old 02-22-2019, 08:05 AM
  #7  
Registered User
Thread Starter
 
Join Date: Dec 2016
Posts: 88
Likes: 0
Received 0 Likes on 0 Posts
Originally Posted by akwheeler View Post
First off, do you feel the vibration in the seat of your pants or does the steering wheel shake?
if you feel the vibration through the seat before the steering wheel shakes you have a problem in the rear not the front.
to confirm this you could lightly apply the parking brake which applies the rear brakes only. if you feel the vibration your rear drums are warped.
this doesn't mean that there isn't an issue with the front also, just that there is definitely a problem in the rear.
you can get a pull from the rear brakes also, it is just not as common or pronounced as an issue from the front.
When you feel the vibration does it continue every time you hit the brakes and go away only after you have stopped driving and everything cools down?
When you feel the shake pull over and check all 4 wheels for heat, see if any are hotter than the others.
Jack up your truck and roll the tires by hand, any of them dragging?
Upon braking it's more of a front/back pumping than a side to side vibration, like if it was intermittently grabbing the disk (or drum). And steering pulls left pretty hard.
on freeway however it's a shake, in the steering.

Will check drag this morning and take a good look at all hoses

I put a lot of work on this truck when I got it a year ago (HG, leaks all over the place, tranny, and well its my DD since..), it was poorly maintained i wouldnt be surprised if fluid is really old..

Last edited by Katoner; 02-22-2019 at 08:15 AM.
Katoner is offline  
Old 02-22-2019, 09:45 AM
  #8  
Registered User
Thread Starter
 
Join Date: Dec 2016
Posts: 88
Likes: 0
Received 0 Likes on 0 Posts
raised the truck.
no cracks or swelling on brake lines.
no significant wheel drag either side, and when pushing brake pedal slowly at different pressures the drag increases both sides the same so Im guessing no internal issues in my brake lines?

no pumping when using only parking brake so issue is in the front most likely.

my suspension components have been replaced, no wheel movement with truck raised. truck drives straight and handles like it should minus that shake at 65 and on.

warped rotor?
Katoner is offline  
Old 02-22-2019, 10:27 AM
  #9  
Registered User
 
Kolton5543's Avatar
 
Join Date: Mar 2013
Location: Safford, AZ
Posts: 365
Likes: 0
Received 14 Likes on 14 Posts
Do you feel the pedal pushing back at the same time?warped rotors will usually force back the pedal and will shake anytime you brake. It sounds to me like you have a glazed spot on the rotors. Causes only a hard grab or loss of grab when in a certain temperature range. This is usually caused by hard braking that build a lot of heat, then coming to a stop and sitting.
Kolton5543 is offline  
Old 02-22-2019, 11:35 AM
  #10  
Registered User
 
Paul22RE's Avatar
 
Join Date: Feb 2018
Location: NNJ
Posts: 202
Received 20 Likes on 16 Posts
Hoses may look fine on the outside, but can collapse on the inside causing the caliper to stick. Problem will get worse as fluid heats up since hose gets hotter and collapses even easier.
Paul22RE is offline  
Old 03-06-2019, 03:24 PM
  #11  
Registered User
Thread Starter
 
Join Date: Dec 2016
Posts: 88
Likes: 0
Received 0 Likes on 0 Posts
Well new development I feel the pedal slightly sinking deeper and deeper when stopped at red lights.., so after all it's probably my master cylinder on its way out..
did some research on the board couldnt find a proper "how to" but will keep looking. I did see a lot of talks about the "upgraded" MC.. mine has a "1" stamped on the side does that mean it's a 1" bore MC? Anyone know a part number (s) for this MC plz? Thanks
Katoner is offline  
Old 03-06-2019, 06:41 PM
  #12  
Registered User
 
Join Date: Jul 2017
Location: West Texas
Posts: 107
Likes: 0
Received 3 Likes on 3 Posts
I once had a shaking in the front end when braking. Mine turned out to be the steering dampener was bad. Changed it and it went away.
amamike91 is offline  
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
konaboi808
Solid Axle Swaps, All Years
5
01-21-2017 08:32 AM
sfayota
Newbie Tech Section
1
11-21-2011 03:17 PM
surferfrank
95.5-2004 Tacomas & 96-2002 4Runners
9
11-13-2005 03:11 AM
NathanBERG
86-95 Trucks & 4Runners
6
10-24-2005 05:35 PM


Thread Tools
Search this Thread
Quick Reply: Rotor or bad Caliper


Contact Us - Archive - Advertising - Cookie Policy - Privacy Statement - Terms of Service

© 2019 MH Sub I, LLC dba Internet Brands

We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.
 
  • Ask a Question
    Get answers from community experts
Question Title:
Description:
Your question will be posted in: