07-23-2007, 03:03 PM
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#1
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GX Member
Join Date: Jan 2007
Location: Spokane, Wa
Posts: 178
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Car shaking when braking...
Hey guys, on steep downhills by car pullsates...or shakes! Also, my steering wheel shakes pretty bad also. I jacked up the car....and spun the wheels, but there did not seem to be a problem? So, what is causing my car to shake...maybe rotors...or pads?
Help Please
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07-23-2007, 03:08 PM
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#2
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GLS member
Join Date: Feb 2007
Location: Regina, SK
Posts: 1,215
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take your car in and get a wheel alignment and get your wheels balanced
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07-23-2007, 09:21 PM
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#3
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GL Member
Join Date: Apr 2005
Location: London, Ontario, Canada
Posts: 762
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Rotors probably. I just got a brand new set and vibrations under braking are gone. Do you have any vibrations at speed??
__________________
2004 Pontiac Grand Prix GTP CompG -- Supercharged 3800 V6
??,??? km
??,??? miles
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07-23-2007, 11:14 PM
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#4
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GL Member
Join Date: Jul 2007
Location: Loring, Ontario, Canada
Posts: 579
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ya likley rotors are warrped.
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2003 Alero
2.2 5speed
Grey
1996 GMC Yukon 4x4
5.7 liters of gas suckin power!
33x12.5r15 Mud Terrians on 15x10 wheels
111,111,111 x 111,111,111 = 12345678987654321
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07-24-2007, 03:23 PM
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#5
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New and Improved
Join Date: Jul 2007
Location: Northern Virginia
Posts: 3,074
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hey, i had much the problem that i think your describing. i took the car in and had the rotors refurbished, and problem is completely gone.
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07-24-2007, 04:16 PM
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#6
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GLS member
Join Date: Aug 2006
Location: Grand Forks, ND for school; Langdon, ND home
Posts: 2,632
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I have the same problem, its warped rotors. and a bent steel rim in my case, but its balenced perfect now and still does it so it rotors. check you rims if you've ever spun out with steel rims.
And for the vibration at speed part, i never had any vibration with bent wheels utill the 90+ mark. hard to control under hard braking at that speed with warped rotors and a bent rim though. damn ducks.
__________________
2001½ F150 XLT Crew Cab- true dual glasspacks with x-pipe, AEM intake, SCT X3 with VMP custom tunes, full stereo system, HID 55w heads and 35w fogs, 35% tint front and 20% rear, Lightning tail lights
04 F6 Sno Pro Team edition- MBRP race can, ODS clutch kit
01 YZ125- bored out to 144, PnP cylinder and head, Pro Circuit WORKS suspension, many other mods
Last edited by jayson_waltz : 07-24-2007 at 04:18 PM.
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07-24-2007, 04:21 PM
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#7
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GLS member
Join Date: Feb 2007
Location: Regina, SK
Posts: 1,215
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just noticed i didn't read the title of the thread... that has to be the rotors
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07-25-2007, 03:37 PM
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#8
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GX Member
Join Date: Jan 2007
Location: Spokane, Wa
Posts: 178
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Ok...thanks guys
I figured it was the rotors, but wanted to check with you guys. How could I find out which rotor is bad?
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07-25-2007, 03:51 PM
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#9
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3500 DONE!
Join Date: Apr 2006
Location: Albany, NY
Posts: 5,915
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Quote:
Originally Posted by redrider07
Ok...thanks guys
I figured it was the rotors, but wanted to check with you guys. How could I find out which rotor is bad?
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Look at them all, notice if one looks different than the other. its most likely one of your front rotors, they do 80% of the braking.
__________________
2002 3400 & 3500 GL "Ruby"-->R.I.P. 163k. My first car. Put 130k on her.
2000 3500 GLS "Robin"-->Intake,Headers,Exhaust,H&R springs,KYB AGX,Sway bars,Strut bars and more
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07-25-2007, 04:22 PM
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#10
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GL Member
Join Date: Oct 2005
Location: Newark, DE
Posts: 358
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My car does this, but only occasionally, and not always under hard braking. I have fairly new front rotors, the old are getting near needing replacing. How hard is it to warp a rotor from braking at high speeds ? Not jacking a thread i just realized i had the same thing happen.
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- (2000 GL) 14.748 @ 93.04
- Doctor Speed Cold Air Intake
- DHP PCM / 180* Tstat
- General Exclaim UHP Tires
- 2 1/2" Pacesetter Exhaust
- S&S Headers
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07-25-2007, 04:28 PM
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#11
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Southern Fly Boy returns
Join Date: Jan 2005
Location: OKC/Austin/El Paso
Posts: 1,521
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either rotors are warped, brake pads are done or wore unevenly, or u need ur car aligned and/or wheels balanced
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07-25-2007, 04:34 PM
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#12
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GL Member
Join Date: Oct 2005
Location: Newark, DE
Posts: 358
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Probably all of the above... I guess I'll have to get it looked at then. Pays to have a mechanics shop in your back yard ...well pays less lol
__________________
- (2000 GL) 14.748 @ 93.04
- Doctor Speed Cold Air Intake
- DHP PCM / 180* Tstat
- General Exclaim UHP Tires
- 2 1/2" Pacesetter Exhaust
- S&S Headers
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07-25-2007, 04:36 PM
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#13
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Southern Fly Boy returns
Join Date: Jan 2005
Location: OKC/Austin/El Paso
Posts: 1,521
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its called do the work urself, brakes are easy as hell to do
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07-26-2007, 01:36 PM
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#14
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The Drunk
Join Date: Mar 2006
Location: Goleta, California
Posts: 770
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There is a special tool to check for checking runout if you want to be exact (something like this http://www.sjdiscounttools.com/cen6450.html )
You can probably find a much cheaper one cuz it's just some vice grips a snake like cable that can me tightened and a little gauge on the end that you can zero out and as you turn the rotor with the gauge touching it it tells you how far the gauge point is moving in that same spot. But you may as well do both sides at once.
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`03 Alero GL 2.2L Ecotec
Alpine Headunit, 18" Ave 7 rims, drilled slotted rotors, painted calipers, cleared corner.
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07-26-2007, 03:12 PM
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#15
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GX Member
Join Date: Oct 2006
Location: Illinois
Posts: 79
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my car did that too and i changed the rotors and it stopped shaking when breaking.
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07-26-2007, 04:40 PM
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#16
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The Founder
Join Date: Nov 2003
Location: Rutgers, NJ
Posts: 6,505
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Yeah the stock rotors are terrible. Get brembo replacement rotors (tire rack has them).
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07-26-2007, 05:30 PM
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#17
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GLS member
Join Date: Feb 2007
Location: Regina, SK
Posts: 1,215
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Yeah, I put wagners on mine and worked great
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