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What would cause my brakes to grab when i press the pedal?

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Back again

Not a car guy I guess

You need to do some brake work,
at least once a year or more often

Could have said neglect or sloppy work
at some shop in the past

Posted on Dec 05, 2014


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  • 2 Answers

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Posted on Jan 02, 2017

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SOURCE: Hissing sound from brake pedal of Renault Scenic 2001

From your description this appears to be a Brake servo issue.
The brakes are assisted by a vacuum created from the draw off the inlet manifold, it gives assistance too the brake pedal pressure by a large tank/cylinder mounted on the Bulkhead/firewall.
I feel that the sound you a hearing is air being draw into the Brake Servo from the foot pedal seal and the reason for fluctuation in the engine is the vacuum from the inlet manifold is being upset.
Attention I suspect should be addressed to the Brake servo/pedal seal or gaitor.
I hope this clarifies your thoughts?
Please remember to rate my effort.
Paul 'W'
Onyer~EDSon(:0) {#><U.K.

Posted on Jan 22, 2009

  • 76164 Answers

SOURCE: brake pedals keep going down

U need to replace the brake master cylinder.

Posted on Mar 13, 2009

  • 335 Answers

SOURCE: When I press the brake pedal on my 2002 Saturn SL

Check brake fluid level. Check rear brake shoes and wheel cylinders for wear or leakage. If all is good ,the master cylinder may have an internal leak.

Posted on Jul 14, 2009

  • 11 Answers

SOURCE: I am drying to diagnose brake problem with 1993

yes it sounds like the problem it could maybe be the brake booster if the brakes are better at a higher idle but there is a check valve on the brake booster that cost 2.00 too replace that runs off vacume i would replace first

Posted on Jul 22, 2009

  • 490 Answers

SOURCE: Brake lights won't come on when I press pedal.

if you can push the switch and it works then it needs to be adjusted to make it work

Posted on Sep 25, 2009

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1 Answer

How do i adjust the brake pedal on my 2007 Toyota Prius

your rear brakes are shot as they are the tightest
the fronts should grab hard when you press very hard
if they are mushy you need brakes bad
you should fell very comfortable that you have great brakes.
when you press the pedal it should feel strong after 1inch of play
mush means your gonna die or kills someone.
have your brakes bled as a service this will allow them to test them for you at same time . thats the limit you can adjust brakes.

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Why when I step on brake an hear hissing noise under dash?

If nobody has helped you yet.....I have 2 things that are possible; 1st is the vacumn assist booster, while it sits in the engine side of the firewall your brake pedal is connected to it, it serves to 'amplify' your pedal pressure. A vacumm leak into the cab compartment may cause the hiss and the inconsistency in the way the brakes grab. The second may be a cruise control switch the earlier ones were controlled by vacumm but I do not know when they switched to electronic controls but this would have nothing to do with the break 'grab'. Best of luck.

May 27, 2014 | 1997 Dodge Caravan

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Brake problem

Usually if the booster fails, the pedal is very hard to push enough to make the vehicle stop.
If the pedal sinks or is soft, the master cylinder is allowing fluid to bypass the pistons inside.

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Braking problem, when brake depressed car pulls to right, next time maybe OK, next time pulls to right, and it appears to have a major overstreer problem also, Can you help

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My brakes don't work very well. They work if i slam them but gradually stop working as well. If i press the pedal all the way to the ground they barely work. What could be the problem?

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Brakes seem to stick.

If you have rear drum brakes then a brake shoe could have come apart causing the wheel to grab and skid on the pavement. If you can see external signs of dark wet areas that would be a leaking brake cylinder which can also cause the brakes to grab. The other possibiity, more common with disc brakes, is that a brake calliper is closing, but is not releasing properly when you let off the brake pedal. This would require replacement of the disc caliper on the wheel where it is grabbing.
Warped rotors can also cause the brake to "grab" when you don't want them to, but generally it will grab and release with a "pulsating' feeling if that's the problem.

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Brake lights won't come on when I press pedal.

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Sep 25, 2009 | 1995 Chevrolet Suburban

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Well on the alternator there is a pipe connecting to it which in it oil flow to lubricate it ,check for that,one test you can do also,is take out the hose from the servo,then start the engine ,now by then put your thumb on the top of the hole of the hose,you will feel your thumb aspirated by the hose,if not you know the problem come from here,what you have to do if so ,you must change the alternator,the part behind the alternator is not producing the vaccum .Hope that help you.

May 15, 2009 | 1995 Nissan Pathfinder

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