Automotive Forums .com - the leading automotive community online! Automotive Forums .com - the leading automotive community online!
Automotive Forums .com - the leading automotive community online! 
-
Latest | 0 Rplys
Go Back   Automotive Forums .com Car Chat > Engineering/Technical
Engineering/Technical Ask technical questions about cars. Do you know how a car engine works?
Reply Show Printable Version Show Printable Version | Email this Page Email this Page | Subscription Subscribe to this Thread
 
Thread Tools Search this Thread
Old 02-14-2011, 06:45 PM   #1
sistersheryl26
AF Newbie
 
Join Date: Feb 2011
Location: buffalo, New York
Posts: 2
Thanks: 0
Thanked 0 Times in 0 Posts
vibrating while at red light coming from brake pedal

So my brakes were pulsating so I had them changed today. I drove it around a bit and after about 60 miles I noticed when I was COMPLETELY stopped at a red light I could hear this vibrating noise sounding like its coming from my brakes. I can hear it when i stick my head out the window and from the inside of the car near the floor. the car is an 07 ion with just barely 50,000 on it. I'm pretty sure its brake related but not sure what they did to it. something must be loose. it doenst do it when its in park only when I have pressure applied to the brake pedal. the second I let go it stops.


Any ideas?

Sheryl
sistersheryl26 is offline   Reply With Quote
Old 02-14-2011, 09:40 PM   #2
shorod
SHO Off
 
shorod's Avatar
 
Join Date: Jun 2004
Location: Cedar Rapids, Iowa
Posts: 10,636
Thanks: 67
Thanked 280 Times in 274 Posts
Re: vibrating while at red light coming from brake pedal

I would guess that you have a vacuum leak. The power for the power brakes comes from the vacuum system. When you apply the brakes the vacuum leak is probably causing a misfire to be more noticeable due to the load. Does your car have a tachometer and if so, does the engine speed drop when you apply the brakes?

-Rod
shorod is offline   Reply With Quote
Old 02-15-2011, 06:32 AM   #3
sistersheryl26
AF Newbie
Thread starter
 
Join Date: Feb 2011
Location: buffalo, New York
Posts: 2
Thanks: 0
Thanked 0 Times in 0 Posts
Re: vibrating while at red light coming from brake pedal

i'll double check today on my way to work but i didnt notice it drop no. and when i first apply the brakes it is fine but if i lift on the brakes and reapply pressure it starts to vibrate so the vaccuum leak could be possible. i just though it was so ironic it started 60 miles after my brake pads and rotors were done. figures right haha

thanks
sistersheryl26 is offline   Reply With Quote
 
Similar Threads
Thread Thread Starter Forum Replies Last Post
'97 Concorde, ABS kicking in under light pedal pressure rchene Concorde 4 07-30-2010 04:36 PM
emergency brake light comes on freakyfire05 ZX2 8 02-11-2010 11:19 AM
Brake pedal does not return bhw33191 Caprice 8 08-29-2009 11:06 PM
Slight vibration when first pressing down on brake pedal. tjforshage Camry/Camry Hybrid/Vista 7 07-31-2004 02:24 PM

Reply

POST REPLY TO THIS THREAD


Bookmarks
Go Back   Automotive Forums .com Car Chat > Engineering/Technical

Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off



All times are GMT -5. The time now is 08:27 PM.

Community Participation Guidelines | How to use your User Control Panel

Powered by: vBulletin | Copyright Jelsoft Enterprises Ltd.
 
 
no new posts