Brakes, Suspension, Wheels & Tires
Rollers and Rubbers (View All Posts)

Help car pulses when brakes applied

Thread Tools
 
Search this Thread
 
Old 06-03-2016, 02:23 PM
  #1  
G10
Registered Member
Thread Starter
 
G10's Avatar
 
Join Date: Mar 2013
Location: Central NJ
Posts: 172
Received 31 Likes on 17 Posts
car pulses when brakes applied

Hi Guys -
My car pulses when brakes applied and I feel the pulses on my break paddle a lot. Any thought how and whats causing this issue ?
Old 06-03-2016, 02:27 PM
  #2  
slartibartfast
Super Moderator
iTrader: (7)
 
slartibartfast's Avatar
 
Join Date: Oct 2014
Location: Houston, Tx
Posts: 6,090
Received 836 Likes on 715 Posts
Brake pedal. You've been *****-footing around. Find a lonely spot on a freeway and brake HARD down to about 10 mph, then return to speed limit. Lather, rinse, repeat. After six of those, you'll have scrubbed off the brake pad material that's transferred to the rotor.

If that doesn't fix the pulsing, have the rotors skimmed.
The following users liked this post:
G37sPhoton (06-05-2016)
Old 06-03-2016, 03:01 PM
  #3  
Kris9884
Registered User
iTrader: (3)
 
Kris9884's Avatar
 
Join Date: Feb 2016
Location: MO
Posts: 2,074
Received 202 Likes on 186 Posts
So what's causing this if its not warped rotors? What's wrong with the pedal?
Old 06-03-2016, 03:24 PM
  #4  
G10
Registered Member
Thread Starter
 
G10's Avatar
 
Join Date: Mar 2013
Location: Central NJ
Posts: 172
Received 31 Likes on 17 Posts
Thanks slartibartfast -
Would this apply to drilled and slotted Rotors ?
Old 06-03-2016, 04:27 PM
  #5  
blnewt
Movin On!
iTrader: (13)
 
blnewt's Avatar
 
Join Date: Nov 2009
Posts: 24,877
Received 4,941 Likes on 4,174 Posts
Originally Posted by G10
Thanks slartibartfast -
Would this apply to drilled and slotted Rotors ?
Yes, you're just trying to remove the high/uneven pad deposits.
Old 06-03-2016, 11:27 PM
  #6  
bikezilla
Registered Member
iTrader: (2)
 
bikezilla's Avatar
 
Join Date: Oct 2015
Location: Westchester
Posts: 969
Received 277 Likes on 170 Posts
Originally Posted by slartibartfast
Brake pedal. You've been *****-footing around.
Poor braking technique causes this?
That is to ask,
can the deposits be caused by gentle braking?
Old 06-03-2016, 11:32 PM
  #7  
slartibartfast
Super Moderator
iTrader: (7)
 
slartibartfast's Avatar
 
Join Date: Oct 2014
Location: Houston, Tx
Posts: 6,090
Received 836 Likes on 715 Posts
Warping of rotors is very uncommon. Yes, brake pad material can preferentially deposit on the the rotor surface. That and local overheating creating cementite which is harder than the iron of the rotor.
http://www.stoptech.com/technical-su...nd-other-myths
The following users liked this post:
Kris9884 (06-04-2016)
Old 06-03-2016, 11:54 PM
  #8  
bikezilla
Registered Member
iTrader: (2)
 
bikezilla's Avatar
 
Join Date: Oct 2015
Location: Westchester
Posts: 969
Received 277 Likes on 170 Posts
Originally Posted by slartibartfast
Warping of rotors is very uncommon. Yes, brake pad material can preferentially deposit on the the rotor surface. That and local overheating creating cementite which is harder than the iron of the rotor.
-Warped- Brake Disc and Other Myths
Cementite. Ha, haven't heard that term since 3rd semester materials. That brings back memories. (Mostly hangovers)


Thanks for the link. Good read.
Old 06-04-2016, 11:40 AM
  #9  
Kris9884
Registered User
iTrader: (3)
 
Kris9884's Avatar
 
Join Date: Feb 2016
Location: MO
Posts: 2,074
Received 202 Likes on 186 Posts
Originally Posted by slartibartfast
Warping of rotors is very uncommon. Yes, brake pad material can preferentially deposit on the the rotor surface. That and local overheating creating cementite which is harder than the iron of the rotor.
-Warped- Brake Disc and Other Myths
Ah, I learned some good stuff in there..
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
thatgforce23
G37 Coupe
26
05-22-2019 09:28 PM
jonpak
Buying & Leasing
7
08-29-2016 10:36 AM
Ihtbealexxx
G37 Sedan
13
06-13-2016 12:54 PM
larryw
Brakes & Suspension
4
06-02-2016 06:43 PM
Louiegee97
Brakes & Suspension
1
05-29-2016 05:28 AM



Quick Reply: Help car pulses when brakes applied



All times are GMT -4. The time now is 10:51 PM.