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Car Shakes During Braking

#1 User is offline   mrb901 Icon

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Posted 21 March 2005 - 08:41 PM

Sometimes I have a severe shake when I brake. I don't think this is a warped rotor because at low speed it doesn't do this. It is particurarly bad at high speed and low brake pressure when going down a long grade. My car is a '98 V70 T5. IPD suggested replacing the conrtol arm bushings, which I did and it seemed to help for a while, but then it came back worse. Any ideas?
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#2 User is offline   kenhoeve Icon

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Posted 21 March 2005 - 08:53 PM

warped front rotors. have had same symptoms.
2007 V70R
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#3 User is offline   jens94850 Icon

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Posted 22 March 2005 - 12:10 AM

QUOTE(mrb901 @ Mar 21 2005, 04:41 PM)
Sometimes I have a severe shake when I brake.  I don't think this is a warped rotor because at low speed it doesn't do this.  It is particurarly bad at high speed and low brake pressure when going down a long grade.  My car is a '98 V70 T5.  IPD suggested replacing the conrtol arm bushings, which I did and it seemed to help for a while, but then it came back worse.  Any ideas?
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Is the shaking more in the steering wheel, brake pedal, or general car shake?

Steering wheel=front rotors, brake pedal=rear rotors, entire car=really bad fronts or rears (REALLY BAD) or, more likely, control arm bushings.
Jens Christensen
1995 F250, 1990 BMW K75RT, 1988 745 Turbo, 1974 Honda ct90, 1973 Honda ct90, 1972 Honda cb175, 1970 BMW R75/5, 1967 Volvo 122 Amazon Wagon
Family: 1994 855 NA, 1994 945, 1992 745 Turbo
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#4 User is offline   MrWinkey Icon

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Posted 22 March 2005 - 12:40 AM

QUOTE(kenhoeve @ Mar 21 2005, 03:53 PM)
warped front rotors.  have had same symptoms.
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I agree....the hotter they get the worse they are..perhaps they are too thin
"SMOKE TROUT NOT CRACK"
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#5 User is offline   mrb901 Icon

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Posted 22 March 2005 - 01:08 AM

It's in the steering wheel. I've looked at the rotors and they don't look warped. I've already replaced the bushings because I had the rotors turned not too long ago. Thanks for your help.
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#6 User is offline   Bay13 Icon

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Posted 22 March 2005 - 01:12 AM

If your steering wheel shakes with brake application, your front rotors are more than likely warped.
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#7 User is offline   kenhoeve Icon

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Posted 22 March 2005 - 01:40 AM

If you turned the rotors recently, I would ask if you have OEM pads on there. If not, I strongly recommend you return to them. I have had problems with warped rotors, and I firmly believe it was due to aftermarket pads.
2007 V70R
FMIC|iPd stage I|iPd sways|iPd endlinks|CAI|QBM|SSR GT-10|IMiV|Alpine|Rockford|Patchouli
Best wagon ever if the damn airbox would stop vibrating and it didn't have a Ford Escort headliner.
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#8 User is offline   jens94850 Icon

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Posted 22 March 2005 - 02:25 AM

QUOTE(mrb901 @ Mar 21 2005, 09:08 PM)
It's in the steering wheel.  I've looked at the rotors and they don't look warped.  I've already replaced the bushings because I had the rotors turned not too long ago.  Thanks for your help.
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Rotors wouldn't look warped...maybe grooved, but you wouldn't see warpage without a straight edge.
Jens Christensen
1995 F250, 1990 BMW K75RT, 1988 745 Turbo, 1974 Honda ct90, 1973 Honda ct90, 1972 Honda cb175, 1970 BMW R75/5, 1967 Volvo 122 Amazon Wagon
Family: 1994 855 NA, 1994 945, 1992 745 Turbo
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#9 User is offline   KLS Icon

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Posted 22 March 2005 - 08:00 PM

Also consider sticking sliding pins on the front calipers. Those can cause heavy vibrations at some times and not at others.


Ken
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