Rear brakes and drums have been replaced, front rotors, calipers and pads and master cylinder. The pedal feels soft and an obvious pulsation can be felt thru the pedal when trying to stop. Rear end hops and it feels like the rear brakes are not round.
Can this be related to bad rear wheel bearings?
What happens is if you have a bad front wheel bearing when you brake that wheel will turn in or out,when this happens it throws the four wheel alignment out and since this is a solid rear axle,it's forcing it to flex on the suspension,wich could cause the rear tires to bite on the outside edge of one tire and the inside edge of the other,thats one possible the other would be that the rear brakes are are not slowing the wheels evenly causing the same issue.I saw this problem with a bad front wheel bearing on a Nissan Pathfinder but not as pronouced due to the independent rear suspension. Check the front wheel bearings,which of course will mean getting the calipers off the rotors,and then check for any movement in the rotor,if there is check the hub nut,if it's loose tighten it and check for play in the rotor if there is still play that's going to be caused by a bad bearing.You can check the braking in the rear with a simple spring scale(like the ones used for fishing),with the wheels removed have someone apply enough pedal pressure to just engage the brakes but still allow movement attach the scale hook to a wheel stud and pull until it starts to move and note how many pounds of pressure it takes to move the hub.If it's uneven chech your adjusters and even them if needed and then retest,if still uneven you'll need to bleed them again.As far as the dark black substance in the fluid I would say you may gotten a contaminent in the fluid.Brake fluid gets kind of a rusty reddish residue when it breaks down.If I missed anything or you need clarification don't hesitate to ask I'm home all day.Hope this helps solve your problem.
CAR BRAKE PROBLEMS
It
can be issue with master cylinder or the problem is there is still some air
there in the system that has to be bleed. Or else the parts replaced are not
aligned properly/.I suggest everything back.
There
are few help links mentioned below to troubleshoot the issue.
Click
the link below and follow its procedure: -----
----------
-----------
----------
------------
-------------
-----------
-------------
----------
---------
----------
------------
http://whoisbyme.blogspot.in/2012/06/fading-sinking-brake-pedal.html
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-------------
------------
http://howtobyme.blogspot.com/2011/11/abs-light-stays-on-but-brakes-work-fine.html
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-----------
------------
-----------
----------
-----------
------------
-----------
----------
---------
---------
http://technoanswers.blogspot.in/2012/06/toyota-tundra-parts-diagram-to-replace.html
http://technoanswers.blogspot.in/2012/02/squeak-and-grinding-sound-is-heard-when.html
------------
Brake Pads Inspection on Acura
Integra?
http://repairhelpcenter.blogspot.in/2011/11/brake-pads-inspection-on-acura-integra.html
-------------
How to remove Brake Pads on Acura
Integra?
http://repairhelpcenter.blogspot.in/2011/11/how-to-remove-brake-pads-on-acura.html
--------------
How to remove Brake Disc Rotor on
Acura Integra?
http://repairhelpcenter.blogspot.in/2011/11/how-to-remove-brake-disc-rotor-on-acura.html
------------
Brake Caliper OVERHAUL on Acura
Integra?
http://repairhelpcenter.blogspot.in/2011/11/brake-caliper-overhaul-on-acura-integra.html
------------
How to remove Brake Caliper on Acura
Integra?
http://repairhelpcenter.blogspot.in/2011/11/how-to-remove-brake-caliper-on-acura.html
------------
How to remove Parking Brake shoes on
Acura Integra?
http://repairhelpcenter.blogspot.in/2011/11/how-to-remove-parking-brake-shoes-on.html
-----------
How to remove Parking Brake Cable on
Acura Integra?
http://repairhelpcenter.blogspot.in/2011/11/how-to-remove-parking-brake-cable-on.html
-------------
----------
http://schematicsdiagram.blogspot.in/2012/06/2002-ford-windstar-brake-warning-light.html
-----------
These
details will help.
Thanks.
It
can be issue with master cylinder or the problem is there is still some air
there in the system that has to be bleed. Or else the parts replaced are not
aligned properly/.I suggest everything back.
There
are few help links mentioned below to troubleshoot the issue.
Click
the link below and follow its procedure: -----
----------
-----------
----------
------------
-------------
-----------
-------------
----------
---------
----------
------------
http://whoisbyme.blogspot.in/2012/06/fading-sinking-brake-pedal.html
-------------
-------------
------------
http://howtobyme.blogspot.com/2011/11/abs-light-stays-on-but-brakes-work-fine.html
-----------
-----------
------------
-----------
----------
-----------
------------
-----------
----------
---------
---------
http://technoanswers.blogspot.in/2012/06/toyota-tundra-parts-diagram-to-replace.html
http://technoanswers.blogspot.in/2012/02/squeak-and-grinding-sound-is-heard-when.html
------------
Brake Pads Inspection on Acura
Integra?
http://repairhelpcenter.blogspot.in/2011/11/brake-pads-inspection-on-acura-integra.html
-------------
How to remove Brake Pads on Acura
Integra?
http://repairhelpcenter.blogspot.in/2011/11/how-to-remove-brake-pads-on-acura.html
--------------
How to remove Brake Disc Rotor on
Acura Integra?
http://repairhelpcenter.blogspot.in/2011/11/how-to-remove-brake-disc-rotor-on-acura.html
------------
Brake Caliper OVERHAUL on Acura
Integra?
http://repairhelpcenter.blogspot.in/2011/11/brake-caliper-overhaul-on-acura-integra.html
------------
How to remove Brake Caliper on Acura
Integra?
http://repairhelpcenter.blogspot.in/2011/11/how-to-remove-brake-caliper-on-acura.html
------------
How to remove Parking Brake shoes on
Acura Integra?
http://repairhelpcenter.blogspot.in/2011/11/how-to-remove-parking-brake-shoes-on.html
-----------
How to remove Parking Brake Cable on
Acura Integra?
http://repairhelpcenter.blogspot.in/2011/11/how-to-remove-parking-brake-cable-on.html
-------------
----------
http://schematicsdiagram.blogspot.in/2012/06/2002-ford-windstar-brake-warning-light.html
-----------
These
details will help.
Thanks.
It
can be issue with master cylinder or the problem is there is still some air
there in the system that has to be bleed. Or else the parts replaced are not
aligned properly/.I suggest everything back.
There
are few help links mentioned below to troubleshoot the issue.
Click
the link below and follow its procedure: -----
All types of brake problems and
repairs
http://howtobyme.blogspot.com/2011/11/abs-and-service-light-comes-on.html
----------
Brake
Fade Issue?
http://whoisbyme.blogspot.in/2012/07/brake-fade-issue.html
-----------
Brake System Troubleshooting?
http://technoanswers.blogspot.com/2011/11/brake-system-troubleshooting.html
----------
Car Brake lines have no
pressure?
http://schematicsdiagram.blogspot.com/2011/12/car-brake-lines-have-no-pressure.html
------------
Car Brakes Dragging?
http://repairhelpcenter.blogspot.com/2011/12/car-brakes-dragging.html
-------------
Car Brakes grabbing?
http://repairhelpcenter.blogspot.com/2011/12/car-brakes-grabbing.html
-----------
Car Brakes Making Noise?
http://repairhelpcenter.blogspot.com/2011/12/car-brakes-making-noise.html
-------------
Car Brakes Pulling?
http://repairhelpcenter.blogspot.com/2011/12/car-brakes-pulling.html
----------
Pulsating Brake Pedal?
http://repairhelpcenter.blogspot.com/2011/12/pulsating-brake-pedal.html
---------
Spongy brake pedal?
http://repairhelpcenter.blogspot.com/2011/12/spongy-brake-pedal.html
----------
Hard Brake Pedal?
http://repairhelpcenter.blogspot.com/2011/12/hard-brake-pedal.html
------------
Fading Sinking Brake pedal?
http://whoisbyme.blogspot.in/2012/06/fading-sinking-brake-pedal.html
-------------
Feels Like Brake pedal Pulsating
http://repairhelpcenter.blogspot.in/2012/06/feels-like-brake-pedal-pulsating.html
-------------
What is Brake Drum Bar?
http://repairhelpcenter.blogspot.in/2012/02/what-is-brake-drum-bar.html
------------
ABS light stays on but brakes
work fine?
http://howtobyme.blogspot.com/2011/11/abs-light-stays-on-but-brakes-work-fine.html
-----------
Vibrations while braking On Chevrolet Van?
http://technoanswers.blogspot.in/2012/04/vibrations-while-braking-on-chevrolet.html
-----------
Dragging brakes?
http://howtobyme.blogspot.in/2012/03/dragging-brakes.html
------------
Brake pedal stuck?
http://howtobyme.blogspot.in/2012/03/brake-pedal-stuck.html
-----------
After replacing brake rotors and pads, brake pedal
remains on floor?
http://technoanswers.blogspot.in/2012/02/after-replacing-brake-rotors-and-pads.html
----------
How to replace Brake Power Booster?
http://repairhelpcenter.blogspot.in/2012/02/how-to-replace-brake-power-booster.html
-----------
1997 Chevy Tahoe Brake lights not working?
http://technoanswers.blogspot.in/2012/02/1997-chevy-tahoe-brake-lights-not.html
------------
How to service Drum brakes?
http://repairhelpcenter.blogspot.in/2012/02/how-to-service-drum-brakes.html
-----------
What type of problems usually noticed on Drum
brakes?
http://repairhelpcenter.blogspot.in/2012/02/what-type-of-problems-usually-noticed.html
----------
How to test Drum Brakes?
http://repairhelpcenter.blogspot.in/2012/02/how-to-test-drum-brakes.html
---------
Brake Bleeder Screw Function?
http://repairhelpcenter.blogspot.in/2012/02/brake-bleeder-screw-function.html
---------
Toyota Tundra: Parts diagram to
replace Brake Drums?
http://technoanswers.blogspot.in/2012/06/toyota-tundra-parts-diagram-to-replace.html
----------
Squeak and grinding sound is heard when brakes are
applied?
http://technoanswers.blogspot.in/2012/02/squeak-and-grinding-sound-is-heard-when.html
------------
Brake Pads Inspection on Acura
Integra?
http://repairhelpcenter.blogspot.in/2011/11/brake-pads-inspection-on-acura-integra.html
-------------
How to remove Brake Pads on Acura
Integra?
http://repairhelpcenter.blogspot.in/2011/11/how-to-remove-brake-pads-on-acura.html
--------------
How to remove Brake Disc Rotor on
Acura Integra?
http://repairhelpcenter.blogspot.in/2011/11/how-to-remove-brake-disc-rotor-on-acura.html
------------
Brake Caliper OVERHAUL on Acura
Integra?
http://repairhelpcenter.blogspot.in/2011/11/brake-caliper-overhaul-on-acura-integra.html
------------
How to remove Brake Caliper on Acura
Integra?
http://repairhelpcenter.blogspot.in/2011/11/how-to-remove-brake-caliper-on-acura.html
------------
How to remove Parking Brake shoes on
Acura Integra?
http://repairhelpcenter.blogspot.in/2011/11/how-to-remove-parking-brake-shoes-on.html
-----------
How to remove Parking Brake Cable on
Acura Integra?
http://repairhelpcenter.blogspot.in/2011/11/how-to-remove-parking-brake-cable-on.html
-------------
Brake pedal is pulsating and vibrating?
http://repairhelpcenter.blogspot.com/2012/01/brake-pedal-is-pulsating-and-vibrating.html
----------
2002 Ford Windstar: Brake
Warning Light ON dash?
http://schematicsdiagram.blogspot.in/2012/06/2002-ford-windstar-brake-warning-light.html
-----------
These
details will help.
Thanks.
CAR BRAKE PROBLEMS
It
can be issue with master cylinder or the problem is there is still some air
there in the system,that has to be bleed.Or else the parts replaced are not
aligned properly/.I suggest everything back.
There
are few help links mentioned below to troubleshoot the issue.
Click
the link below and follow its procedure:-----
All types of brake problems and
repairs
http://howtobyme.blogspot.com/2011/11/abs-and-service-light-comes-on.html
----------
Brake
Fade Issue?
http://whoisbyme.blogspot.in/2012/07/brake-fade-issue.html
-----------
Brake System Troubleshooting?
http://technoanswers.blogspot.com/2011/11/brake-system-troubleshooting.html
----------
Car Brake lines have no
pressure?
http://schematicsdiagram.blogspot.com/2011/12/car-brake-lines-have-no-pressure.html
------------
Car Brakes Dragging?
http://repairhelpcenter.blogspot.com/2011/12/car-brakes-dragging.html
-------------
Car Brakes grabbing?
http://repairhelpcenter.blogspot.com/2011/12/car-brakes-grabbing.html
-----------
Car Brakes Making Noise?
http://repairhelpcenter.blogspot.com/2011/12/car-brakes-making-noise.html
-------------
Car Brakes Pulling?
http://repairhelpcenter.blogspot.com/2011/12/car-brakes-pulling.html
----------
Pulsating Brake Pedal?
http://repairhelpcenter.blogspot.com/2011/12/pulsating-brake-pedal.html
---------
Spongy brake pedal?
http://repairhelpcenter.blogspot.com/2011/12/spongy-brake-pedal.html
----------
Hard Brake Pedal?
http://repairhelpcenter.blogspot.com/2011/12/hard-brake-pedal.html
------------
Fading Sinking Brake pedal?
http://whoisbyme.blogspot.in/2012/06/fading-sinking-brake-pedal.html
-------------
Feels Like Brake pedal Pulsating
http://repairhelpcenter.blogspot.in/2012/06/feels-like-brake-pedal-pulsating.html
-------------
What is Brake Drum Bar?
http://repairhelpcenter.blogspot.in/2012/02/what-is-brake-drum-bar.html
------------
ABS light stays on but brakes
work fine?
http://howtobyme.blogspot.com/2011/11/abs-light-stays-on-but-brakes-work-fine.html
-----------
Vibrations while braking On Chevrolet Van?
http://technoanswers.blogspot.in/2012/04/vibrations-while-braking-on-chevrolet.html
-----------
Dragging brakes?
http://howtobyme.blogspot.in/2012/03/dragging-brakes.html
------------
Brake pedal stuck?
http://howtobyme.blogspot.in/2012/03/brake-pedal-stuck.html
-----------
After replacing brake rotors and pads, brake pedal
remains on floor?
http://technoanswers.blogspot.in/2012/02/after-replacing-brake-rotors-and-pads.html
----------
How to replace Brake Power Booster?
http://repairhelpcenter.blogspot.in/2012/02/how-to-replace-brake-power-booster.html
-----------
1997 Chevy Tahoe Brake lights not working?
http://technoanswers.blogspot.in/2012/02/1997-chevy-tahoe-brake-lights-not.html
------------
How to service Drum brakes?
http://repairhelpcenter.blogspot.in/2012/02/how-to-service-drum-brakes.html
-----------
What type of problems usually noticed on Drum
brakes?
http://repairhelpcenter.blogspot.in/2012/02/what-type-of-problems-usually-noticed.html
----------
How to test Drum Brakes?
http://repairhelpcenter.blogspot.in/2012/02/how-to-test-drum-brakes.html
---------
Brake Bleeder Screw Function?
http://repairhelpcenter.blogspot.in/2012/02/brake-bleeder-screw-function.html
---------
Toyota Tundra: Parts diagram to
replace Brake Drums?
http://technoanswers.blogspot.in/2012/06/toyota-tundra-parts-diagram-to-replace.html
----------
Squeak and grinding sound is heard when brakes are
applied?
http://technoanswers.blogspot.in/2012/02/squeak-and-grinding-sound-is-heard-when.html
------------
Brake Pads Inspection on Acura
Integra?
http://repairhelpcenter.blogspot.in/2011/11/brake-pads-inspection-on-acura-integra.html
-------------
How to remove Brake Pads on Acura
Integra?
http://repairhelpcenter.blogspot.in/2011/11/how-to-remove-brake-pads-on-acura.html
--------------
How to remove Brake Disc Rotor on
Acura Integra?
http://repairhelpcenter.blogspot.in/2011/11/how-to-remove-brake-disc-rotor-on-acura.html
------------
Brake Caliper OVERHAUL on Acura
Integra?
http://repairhelpcenter.blogspot.in/2011/11/brake-caliper-overhaul-on-acura-integra.html
------------
How to remove Brake Caliper on Acura
Integra?
http://repairhelpcenter.blogspot.in/2011/11/how-to-remove-brake-caliper-on-acura.html
------------
How to remove Parking Brake shoes on
Acura Integra?
http://repairhelpcenter.blogspot.in/2011/11/how-to-remove-parking-brake-shoes-on.html
-----------
How to remove Parking Brake Cable on
Acura Integra?
http://repairhelpcenter.blogspot.in/2011/11/how-to-remove-parking-brake-cable-on.html
-------------
Brake pedal is pulsating and vibrating?
http://repairhelpcenter.blogspot.com/2012/01/brake-pedal-is-pulsating-and-vibrating.html
----------
2002 Ford Windstar: Brake
Warning Light ON dash?
http://schematicsdiagram.blogspot.in/2012/06/2002-ford-windstar-brake-warning-light.html
-----------
These
details will help.
Thanks.
972 views
Usually answered in minutes!
Yes, I changed the brakes front and rear Twice over the past year and bled them.
I have suspected a bad wheel bearing as the cause of the pulsing sensation, however can't relate that to the rear wheel hop.
Also noticed the brake fluid has dark black substance in it now
Thanks, I am usually pretty good at this stuff, been doing my own for 30 years but thus far have been able to find the root cause of this phenomenon. I have suspected the bearings but actually thought it was the rear axle bearings causing it.
I was going to replace the ball joints anyway so will also go thru the front bearings at the same time.
I knew the fluid had become contaminated but can't come to grips with why the black cloudy color. I will change it all any way and see what happens.
One last clue, I also seem to be hearing a very constant metal on metal rubbing coming from the rear, it's not real loud and sounds like a light rub of a wheel hub against the axle plate but everytime I take it apart to look I don't see anything.
No Gear Oil leaks, clean as a whistle and when raised off the ground and I spin the wheels it's quiet.
There is no rear wheel bearings per se,just axle bearings,the soft pedal is more than likely attributed to air in the hydraulic system,the pulsation,since you have new rotors,is possibly a bad front wheel bearing or the front hub could be loose,did you change the brakes yourself?or a shop?
front tires are hopping and doesent turn sharp when backing up
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