2003 Sunfire shakes a whole lot when braking... - Suspension and Brake Forum

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2003 Sunfire shakes a whole lot when braking...
Friday, May 27, 2005 2:25 PM
2003 Sunfire shakes a whole lot when braking... Not so much if I'm not going really fast, but if I'm going a pretty decent speed and I have to break it starts shaking, even my steering wheel shakes. I'm not even slamming on the breaks either. Just easing up on them to come to a stop, but it still rattles the hell out of the car. Is there any reason for this and is there something I can do about it?

Re: 2003 Sunfire shakes a whole lot when braking..
Friday, May 27, 2005 3:55 PM
Likely the front brake rotors have "warped"... they have a tendancy to do that

It's not that they actually warp though... but the runout on the rotor exceeds the maximum... so when the pads are going over the high-to-low spots it tends to vibrate... all the way through the pedal and majority of the car...

Replace the front brakes




<a href="http://www.lenkorules.com/"><img src="http://s93165229.onlinehome.us/images/zm/sig/LRDCsig3.jpg"></a>
Re: 2003 Sunfire shakes a whole lot when braking..
Friday, May 27, 2005 3:58 PM
what he said ^^





Re: 2003 Sunfire shakes a whole lot when braking..
Friday, May 27, 2005 4:03 PM
yup yup...Mr. Lenko again hit it on the head


<img src="http://registry.gmenthusiast.com/images/mishkafan/personal_pic.jpg">
Re: 2003 Sunfire shakes a whole lot when braking..
Friday, May 27, 2005 5:33 PM
So I need new brakes or just new brake pads?
Re: 2003 Sunfire shakes a whole lot when braking..
Friday, May 27, 2005 9:32 PM
pads and rotors


see ya!

Re: 2003 Sunfire shakes a whole lot when braking..
Friday, May 27, 2005 9:41 PM
i had a 97 sunfire that used to shake like that...turns out it wasn't the brakes i was stupid enough to drive it until the motor mounts broke and my engine fell in...turned out just one of the motor mounts was loose, all i woulda had to do was get that replaced and i coulda avoided all that.....so yeah have the mechanic check the motor mounts too



Re: 2003 Sunfire shakes a whole lot when braking..
Saturday, May 28, 2005 7:34 AM
mikeylikey(theTotalEstr8one) wrote:i had a 97 sunfire that used to shake like that...turns out it wasn't the brakes i was stupid enough to drive it until the motor mounts broke and my engine fell in...turned out just one of the motor mounts was loose, all i woulda had to do was get that replaced and i coulda avoided all that.....so yeah have the mechanic check the motor mounts too


Dang... Sounds like I've got a @!#$ load of stuff to check up on now... I hate working 2 jobs... So much to do... so little time....
Re: 2003 Sunfire shakes a whole lot when braking..
Saturday, May 28, 2005 8:02 AM
Oh well, at least my Sunfire is still covered under warrenty. I'm gonna get a check up on everything this week or next week so I can get everything back tonormal before it expires at the end of this summer.
Re: 2003 Sunfire shakes a whole lot when braking..
Saturday, May 28, 2005 8:04 AM
Do the brakes first. My '03 Cav did that too, and it only had 10K on the odometer. I bought the slotted rotors from Pat, at Stop-it perf., put 'em on, and no more shake. And the car stops better now, especially in the wet.



I may not know much about cars, but I know two things....
1) Breaking things is expensive, and
2) Horsepower isn't cheap.
Re: 2003 Sunfire shakes a whole lot when braking..
Saturday, May 28, 2005 10:41 AM
my car just did that. got all new brakes all the way around and warped them within a few months....going to the track and the way i drive etc. i love driving my car, but i absolutely dreaded it when it i drove around, even short trips. i ordered new cross drilled and slotted rotors from Roto Tech and put them on in under 30 mins. Wow, can i say awesome braking. stops way faster and i have a 1 year warranty on them.







Re: 2003 Sunfire shakes a whole lot when braking..
Saturday, May 28, 2005 6:00 PM
its def the rotors. swap em out with bendix
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