Car vibrates under braking HELP

Where the power meets the road.

Moderators: Helpinators, Moderators

Post Reply
Muiretta
First Gear
Posts: 50
Joined: Fri Feb 06, 2009 2:32 am
Location: Sacramento
Contact:

Car vibrates under braking HELP

Post by Muiretta »

I have a1991 Subaru Legacy Sedan and am looking to find a cure for the vibrations I am having under braking I have had 4 sets of tire for the car in two years trying to fix it with no luck. Also just replaced the brakes all around. Also put new front cv's as well. Thanks Marco
SiCkSTi04
Second Gear
Posts: 481
Joined: Sat Jun 21, 2008 11:24 pm
Location: St Pete, FL

Post by SiCkSTi04 »

where do you feel the vibrations at? at the steering wheel or brake pedal etc
-04 WRX STi - Java Black Pearl - Cobb Stage 2
-02 Forester Type S premium - Platinum Silver Metallic - Stock
-92 Legacy Sport Sedan - Onyx Black Pearl - Stock
log1call
Second Gear
Posts: 390
Joined: Mon Jan 22, 2007 5:22 am

Post by log1call »

Describe the vibrations... the frequency, how you feel or hear it, how loud or strong it is, whether it gets worse with harder braking etc.
Saskatoon Subaru
Second Gear
Posts: 395
Joined: Wed Aug 09, 2006 6:36 am
Location: Saskatoon,SK

Post by Saskatoon Subaru »

warped rotors comes to mind
2010 Impreza WRX - 265hp

1990 Legacy 267,000km(Rebuild complete 265,423km----March 9/2008)

1991 Legacy Turbo 180,000km
93Leg-c
Fourth Gear
Posts: 1886
Joined: Mon Oct 27, 2003 7:17 am
Location: Oahu, Hawaii, USA

Post by 93Leg-c »

Like Saskatoon, warped front rotors may probably be the culprit of the vibrations if you're feeling the vibrations upon braking. Did you do the brake job yourself or did you take it to a shop? Were the rotors "turned' or "cut"? If the rotors are not out-of-spec, take them to an auto parts store and they can usually do them for about $6 each rotor.

Also, when you install the new brake pads, you'll need to break them in properly. Take the car up to highway speeds, about 65 mph, and brake hard down to about 20 mph, (make sure there's no traffic behind you!), then back up to highway speeds are repeat three times total. This procedure is done to transfer some of the brake pads' composition to the rotors. If break-in is not done properly, that can also be a cause of vibration or what seems to be warped rotors.
'94 TW
ericem
Fifth Gear
Posts: 3242
Joined: Mon Oct 16, 2006 9:44 pm
Location: Toronto,ON Canada

Post by ericem »

How were the sliders when you replaced the brakes? Did the caliper move in and out pretty smooth?
1993 Subaru Legacy L AWD Wagon R.I.P
1994 Subaru Legacy SS R.I.P :(
2004 Nissan Titan LE 4X4
2007 Subaru Legacy GT :)
Post Reply