Question about 2003 Buick Rendezvous

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When I put on brakes I can hear air as I am braking and it doesn't stop until I take my foot off. As long as my foot is on the brakes the air is heard.

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Vacuum booster has a leak

Posted on May 28, 2011

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2003 chrysler concorde ,


Most vehicles have a brake sensor on the top of the brake pedal and it may be out of adjustment. It's very simple to adjust. Try checking that out. If it's out of adjustment it doesn't know you're foot is on the brake until you push the pedal very hard. But don't adjust it too far the other way or you're brake lights won't work right.

Jul 03, 2012 | 2003 Chrysler Concorde

1 Answer

Have to push the pedal to the floor to get car to stop. Fluid levels fine.


If the pedal really is going down to the floor you must have air in the system and you are compressing it. It is possible to get a very minor leak that lets air in but very little fluid out. If the pedal is going down to the usual level your servo could be acting up. If you get somebody to run the engine and then stop it and press the brake pedal while you listen under the bonnet you should be able to hear the air rush in when the atmospheric valve opens. If it doesn't you may have a leaking hose or the atmospheric valve is not working properly.
Another possibility is seized pistons in your calipers or they are rusted up and sticking. If you jack the car up and get someone to press the brake pedal and see if it locks each wheel in turn, when they take their foot off the pedal you should be able to turn the wheel by hand. If the wheels don't lock when the foot brake is applied or don't unlock when the pedal is released the problem is probably either sticking disc pads or seized pistons.

Jun 09, 2012 | 1994 Honda Civic

1 Answer

96' Chevy K1500 Brakes are hard to press, but u hear a lot of air coming out, if i hold the brakes down for too long the truck cuts off.


It sounds like a problem with the brake booster, the air diaphragm that gives you power brakes. It is located right behind the brake master cylinder and mounted to the firewall.
Check the large vacuum hose to it for leaks. If the air is coming out of the unit itself, it will need replacing.
It will stop the engine because with a large air leak, the engine just sucks in way too much air. Hard brakes are also an indication that the booster is not working right. But check the hose first for leaking.
Good luck.

Mar 27, 2012 | 1996 Chevrolet K1500

2 Answers

Spongy brakes after changin brake pads and calipers


Sounds like the calipers weren't bled or weren't bled sufficiently. You should have a helper pump up the brakes. Then you should open one of the bleeder screws. The brake pedal should fall to the floor and air and/or fluid sould come out.. Close the bleeder before your helper lets the brake pedal up. If any air comes out repeat the process until only fluid comes out. Now repeat the process on the other caliper. Be sure to check the fluid level in the reservoir often to make sure it doesn't go empty.

Aug 25, 2011 | 1999 Chevrolet Silverado 1500

1 Answer

I change breaks pads on my 08 jeep compas after that i push pedal breaks end not i dond have pressure on pedal way? thanks


sounds like you got air in your brake lines from where you changed your pads thier should be a bleeder valve on your brakes get a friend to hold the brake pedal to the floor while you take a wrench and break the valve open when the pedal hits the floor close the valve just continue doing that until pure brake fluid comes out without air bubbles start at the master cylinder under the hood and don't stop until you have done all four corners if that doesn't fix it you might need a brake booster

Jul 23, 2011 | 2008 Jeep Compass

1 Answer

I changed the rear brakes on my Jetta tdi and now the brake pedal goes all the way to the floor. It does stop eventually and the parking brakes work. But it stops poorly


you probably have air in the line after brakes are done refill resevoir with brake fluid then the caliper has a little screw for bleeding brakes you must pump brakes 2-3 times leave your foot down until you have someone else open the screw on the caliper to release air or sometimes brake fluid close screw and repeat until the petal gets hard again do it to both rear brakes see if this works..

Mar 21, 2010 | 2000 Volkswagen Jetta TDI

2 Answers

Air coming from the brakes


That's the first sign that your power brake booster is getting ready to go out, replace it.

Dec 29, 2009 | 1999 Dodge Intrepid

1 Answer

Problem with Brakes


Listen under the dash where the rod goes into the back of the booster if noise is from there, it's leaking.

Jun 07, 2009 | 2006 Saturn L300

3 Answers

!988 k1500 4x4 5.7l brakes


Bleed right rear,left rear, right front, left front in that order to be sure of good bleed but the brake booster makes it easy to push pedal. Make sure of no leaks from master cylinder. Otherwise brake hoses being soft will also hurt baking quickly.

Apr 15, 2009 | 1988 Chevrolet K1500

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