Brake Question
#1
Brake Question (Problem persists)
My new (to me) '88 Turbo S's brakes seemed to be behaving inconsistently. Until a few days ago the pedal stayed high and the was rock solid when depressed. A few days ago I was driving in a residential area by work and made a quick left then right then left again. When I stepped on the brake pedal it seemed lower then it usually is. They seemed fine the rest of the day. Didn't drive the car again until today. This morning I went through the same set of turns and the pedal seemed lower again. Tonight I was driving it and the pedal felt as usual on some stops and seemed a bit lower on others. When I mean it seemed low it never seems too low, just lower than usual. Funny enough I started a thread previously on how to lower the brakes as they seemed too high to heel toe. So now, when I say the brake is low it is about even with the height of the gas pedal. I checked the fluid level and it is good.
Last edited by jeeper31; 03-19-2007 at 09:25 PM.
#7
When the wheel bearings are loose the rotor moves in and out which pushes the pads
away from the rotor. The first time you push the brake pedal down it has to push the pads
out to the rotor before the brakes can work which causes the pedal to travel more than
usual. The pedal height will stay normal until you make a hard turn or hit big bumps.
away from the rotor. The first time you push the brake pedal down it has to push the pads
out to the rotor before the brakes can work which causes the pedal to travel more than
usual. The pedal height will stay normal until you make a hard turn or hit big bumps.
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#8
Originally Posted by AR10
When the wheel bearings are loose the rotor moves in and out which pushes the pads
away from the rotor. The first time you push the brake pedal down it has to push the pads
out to the rotor before the brakes can work which causes the pedal to travel more than
usual. The pedal height will stay normal until you make a hard turn or hit big bumps.
away from the rotor. The first time you push the brake pedal down it has to push the pads
out to the rotor before the brakes can work which causes the pedal to travel more than
usual. The pedal height will stay normal until you make a hard turn or hit big bumps.
#9
Proper way-
Jack the car up, take out wheel bearings, inspect, if ok, repack, put wheel back on, set car on ground.
Another way-
Jack car up, place one hand on top of wheel and one on bottom and try to wiggle the wheel.
I prefer method 1 as it does two things, it insures visual inspection of the bearing and repacks it with grease till the next time.
Jack the car up, take out wheel bearings, inspect, if ok, repack, put wheel back on, set car on ground.
Another way-
Jack car up, place one hand on top of wheel and one on bottom and try to wiggle the wheel.
I prefer method 1 as it does two things, it insures visual inspection of the bearing and repacks it with grease till the next time.
#10
Here's a good write-up describing knockback:
http://www.stoptech.com/tech_info/wp_knockback.shtml
Lot's of other good stuff on that website as well.
http://www.stoptech.com/tech_info/wp_knockback.shtml
Lot's of other good stuff on that website as well.
#11
Originally Posted by Dave951M
Proper way-
Jack the car up, take out wheel bearings, inspect, if ok, repack, put wheel back on, set car on ground.
Another way-
Jack car up, place one hand on top of wheel and one on bottom and try to wiggle the wheel.
I prefer method 1 as it does two things, it insures visual inspection of the bearing and repacks it with grease till the next time.
Jack the car up, take out wheel bearings, inspect, if ok, repack, put wheel back on, set car on ground.
Another way-
Jack car up, place one hand on top of wheel and one on bottom and try to wiggle the wheel.
I prefer method 1 as it does two things, it insures visual inspection of the bearing and repacks it with grease till the next time.
Now what?
#14
if they were adjusted too tightly initially it could kill the bearings causing that- you may also just need to rebleed your brakes if the fluid is old or boiled and temperature etc is making the level and pressures fluctuate.
#15
Originally Posted by xsboost90
if they were adjusted too tightly initially it could kill the bearings causing that- you may also just need to rebleed your brakes if the fluid is old or boiled and temperature etc is making the level and pressures fluctuate.
Last edited by jeeper31; 01-29-2007 at 04:09 PM.