Question about 2007 Ford Edge SEL

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Brakes are hard to press and make a hissing sound

Posted by Anonymous on

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6ya6ya
  • 2 Answers

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Posted on Jan 02, 2017

polarcycle
  • 1392 Answers

SOURCE: when u press on the brakes on my expedition, i hear air escaping.

If it is a constant hiss with your foot on the pedal, you have a bad brake booster. If you hear a hiss, and nothing else while holding the pedal, it is the air escaping from the booster boot, and should not pose a problem.

Posted on Jun 11, 2009

  • 170 Answers

SOURCE: Bad brakes on 1995 Ford T-bird. Must push hard to stop car.

Leaking power brake booster or check valve.

Posted on Aug 18, 2009

johnjnail
  • 1702 Answers

SOURCE: my 2005 escape has a

book time is less than 1 hour, it is an easy job here is the procedure.




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Posted on Jun 12, 2011

  • 50 Answers

SOURCE: 1997 Ford Thunderbird, Brakes make a hissing sound when pressed

Sounds like the vacuum booster.Check all hoses to and from it

Posted on Oct 21, 2012

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1 Answer

1996 Buick Park Avenue Ultra making a hissing noise when I press Brake Pedal. Have to Press super hard to stop or slow down.


Sounds like a possible air pocket in the braking system. Do you know how the bleed the brakes? They may need to be bled. Also, if you've added brake fluid recently, and didn't put the cap back on, it could create a suction. Another note is to check the cap to the brake fluid reservoir. It's rare, but, it could be bad.

Jul 10, 2013 | Cars & Trucks

1 Answer

Brake Problem


yes but up to a point
the brake pedal should move about 1" to take up the pedal free play and then be applied smoothly as you press further
the harder you press the more solid stopping action you will get
that way you can feel the brakes working so that you can adjust the braking action for stopping
there should be no hissing noise that occurs when the brakes are being applied
you say hydro booster which is hydraulic booster but a hissing noise will come from an air leak in a vacuum brake booster which indicates that it needs repalcing

Apr 16, 2017 | 2001 Dodge Durango

1 Answer

Why would my brakes hiss when I step on them and cause the engine to rev up when I do this? It also makes the vehicle very hard to stop.


It sounds like your brake booster is leaking. The air hissing is the air going into the leak. This extra air goes into the engine and causes the engine to rev up. The booster is what makes it easy to push the brake, (when it is working correctly) which is why the pedal is hard to push.

May 31, 2012 | Chevrolet Blazer Cars & Trucks

1 Answer

Brake pedal hard 2 press,can hear a hissin sound.


the hissing sound is most likely the vacuum leaking past the seal in the brake booster & that is why the brake pedal is hard because you don't have any power assistance, the brake booster will have to be replaced.......hope this helps.....cheers.

Aug 31, 2011 | Honda Accord Cars & Trucks

1 Answer

2003 trail blaizer abs press brake pedal its hard sounds like vacuum leak under dash


your brakes are what is called power brakes if your vechile did not have power brakes it would be hard to push the brake pedal down the power brake booster is ran off vacume from the motor if your booster is bad it will give a hissing sound or simalar there not hard to replace but you have no tools or experince dooing repairs like this its best left to a shop.

Aug 28, 2011 | 2003 Chevrolet TrailBlazer

1 Answer

Brake pedal hard to press has a hissing sound


Check the vaccume line going to the brake booster. BUT if you can hear a hissing sound from inside and the pedal is hard to press more than likely your going to need a new brake booster and a new brake master cylinder.

Jul 31, 2011 | 1995 Plymouth Voyager

1 Answer

My brakes on my Mark 8 have become hard as the brake pedal takes longer to come to a stop and there is a hissing sound. I presume that is the master cylinder power assist..What would that cost to replace...


brakes on my Mark 8 have become hard as the brake pedal takes longer to come to a stop and there is a hissing sound. I presume that is the master cylinder power assist..What would that cost to replace parts and labor..

Sep 19, 2010 | 1997 Lincoln Mark VIII

1 Answer

My 2003 ford expedition just started a hissing noise near the brake pedal that stops when I press on the brake pedal


most likely have a bad diaphram in the brake booster that hisssing sound is vacuum leaking under hood there will be hose going to brake booster unhook hose and pinch off hose start car does hissing sound disappear if so bad booster

Sep 03, 2010 | 2003 Ford Expedition

1 Answer

I have excessive brake travel, and a hard time 98 chevy blazer


Two issues...
The brake booster has a ruptured diaphragm. Replace the booster.
It is located under the hood between the brake master cylinder and the firewall.

Your master cylinder may be leaking fluid internally past the plunger.
Have it examined when you change the booster.

Oct 12, 2009 | 1998 Chevrolet Blazer

1 Answer

When u press on the brakes on my expedition, i hear air escaping.


If it is a constant hiss with your foot on the pedal, you have a bad brake booster. If you hear a hiss, and nothing else while holding the pedal, it is the air escaping from the booster boot, and should not pose a problem.

Jun 11, 2009 | 2003 Ford Expedition

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