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How to know if my break booster is bad or is it my mastey cylinder on a 2002 aztek

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If the brake booster fails, you will not have power assist and it will take a great deal of foot pressure to make the vehicle stop.

Posted on Apr 25, 2013

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Posted on Jan 02, 2017

  • 1861 Answers

SOURCE: 2002 Toyota Sequoia power brake booster % master cylinder are bad

Mr. Clark:
It would be extraordinary for a technician to recommend a booster and a master cylinder with no previous mention from you of a possible problem in this area. In other words, the technician had no business looking at the m/cyl or the booster, unless you told him that your braking was deficient.
Here is what REALLY happened: Somewhere, I'd bet, your brake light came on, and somebody "topped off" the master cylinder, to shut the light off. Now, please understand that the brake fluid level in the master cylinder reservoir DROPS PROPORTIONALLY to the wear of the brake pads. When the tech replaced the front brake pads, he obviously had to squeeze the caliper pistons into the housings to allow the insertion of the new pads. This action forced the brake fluid from the now-compressed caliper pistons BACK into the master cylinder, and it sprayed out from under the cap, coating the cylinder and the booster. Tell that repair service that you do NOT need a booster and a master cylinder, THEY caused the problem with the fluid being everywhere. I am confident that I just saved you a significent amount of money that you do NOT need to spend. Have a great day.

Posted on Dec 29, 2008

  • 69 Answers

SOURCE: Need Break Booster Replaced

The brake booster/ naster cylinder is located on the firewall on the drivers side of the vehicle. The master cylinder has a resivour (sp) which has a cap and holds brake fluid. The brake booster is right behind that, the master cylinder is bolted right to the booster. The booster looks like a big circle about 10 to 12 inches round and usually 4 to 6 inches thick. It will have a vaccum hose coming off the booster and going to the intake manifold. The master cylinder with have hard lines coming off it which are brake lines. Hope this helps.

Posted on Mar 25, 2009

  • 108 Answers

SOURCE: 2002 tahoe breaks lock up during driving

i would check front and rear brakes if rears are drum brakes i would inspect springs and hardware making sure everthing is conected and in place also make sure they are adjusted properly in the front and if rear disc i would make sure to grease caliper slides these allow caliper to move and its important that all moving brake parts are free push caliper pistons in alittle to see if they are sized or not booster is ok and most of the time when master goes it will leak where it meets booster and you will have a low brake pedal or no brakes

Posted on Mar 31, 2009

  • 82 Answers

SOURCE: 2002 Pontiac Aztek - AWD disable light and Anti Lock Light

AWD disabled from a sensor unit in rear differential that senses high temp. This thing is over $300. Whine is from fluid. Need to change fluid. This versatrack fluid is about $40 per bottle and you need 3 bottles. Thumping noise is from loose rear knuckle bushings. These are part of the entire rear knuckle assy. and you must replace complete knuckle.

Posted on Jun 22, 2009

  • 2 Answers

SOURCE: Pontiac 2002 Aztek odometer had quit. Does anyone

if it is analog, it is similar to the Grand Prix's. google 2002 Grand Prix odometer fix, you will find the solution there

Posted on Jun 30, 2010

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2 Answers

After changing break pads,caliper and break cylinder I bled breaks and still do not have my breaks hard . Need help


Assuming you followed the correct procedure to bleed the brakes and got all the air out then in all likelihood the brake booster or master cylinder is bad.

Dec 02, 2016 | Cars & Trucks

1 Answer

How to replace brake booster on 2005 Pontiac aztek


Step 1 - Locate the Brake Booster The brake booster is located adjacent to the master cylinder. There will be 4 mounting screws protruding through the booster. The booster is also attached to the brake pedal in the interior of the car. This is where you will start work in replacing the brake booster.
Step 2 - Remove the Brake Booster Start by locating the booster rod that goes through the firewall and is attached to the brake pedal on the interior of the car. Typically, there is a cotter pin that secures the rod to the pedal, but there may also be nuts. When removing any fasteners in the course of this job, make sure to retain the nuts, cotter pins, and various other fasteners as the new brake booster will not come with replacement fasteners.
Remove the fasteners, whether it is a cotter pin or nuts. Slide the rod off the brake pedal. Disconnect the vacuum brake line that connects to the booster. In the engine compartment, there are four bolts securing the booster to the master cylinder and firewall. Loosen and remove these nuts. Remove the nuts (there are usually 2 in addition to the 4 that have already been removed) that secure the brake booster to the master cylinder. Wiggle the brake booster away from the master cylinder. There is a seal between the two. You will need to keep this as the new part does not generally come with another one. Remove the brake booster.
Step 3 - Install the New Brake Booster Set the new brake booster on the four mounting screws. Tighten the nuts on the bolts to the master cylinder. Insert the push rod through the firewall. Start these by hand so that the threads are not ruined. Reattach the vacuum hose, then the nuts to the 4 mounting screws. Reattach the push rod to the brake pedal by whatever means it was originally secured with, whether by cotter pin or by bolts.
Step 4 - Bleed the Brakes You will need to bleed the brakes after replacing the brake booster

Jul 11, 2016 | 2005 Pontiac Aztek

1 Answer

Air noise when using break peddle in a 2002 Hyundai accent


The fluid leaking out the rear seal of the master cylinder has likely swelled/damaged the rubber diaphragm in your brake booster, causing the hissing sound. Unfortunately, you will need to replace your booster.

Feb 04, 2013 | 2002 Hyundai Accent

2 Answers

My brake pedal is spongy, what would cause that? fluid level is good


air in the line or bad booster. try getting the brakes bled if it doesnt fix it probably a bad booster

Jun 26, 2012 | 2005 Dodge Ram 2500 Truck

2 Answers

My car will start but I cannot move it into drive. When I push on the brakes to transition from Park to Drive the brakes make a hissing noise...


The hissing noise could be the power brake booster leaking vacuum. The inability to shift out of park is likely to be a bad SHIFTER INTERLOCK SWITCH attached to the brake pedal under the dash.

Dec 30, 2010 | 2002 Pontiac Aztek

1 Answer

I had a low brake pedal so i changed the master cylinder but after the change pedal is higher but seems to be hard to push like i have no vacume fo the booster


did you hook the back blast valve back up to the booster mon........ also check the plastic valve in the line to the booster to make sure its working if that don;t fix it then either you have a bad booster or you put the wrong master cylinder on it cause the one for standard breaks? the hole in the end of the master cylinder isnt as deep and the one for power breaks

Jan 18, 2010 | 2003 Volvo XC90

1 Answer

2002 tahoe breaks lock up during driving


i would check front and rear brakes if rears are drum brakes i would inspect springs and hardware making sure everthing is conected and in place also make sure they are adjusted properly in the front and if rear disc i would make sure to grease caliper slides these allow caliper to move and its important that all moving brake parts are free push caliper pistons in alittle to see if they are sized or not booster is ok and most of the time when master goes it will leak where it meets booster and you will have a low brake pedal or no brakes

Mar 31, 2009 | 2002 Chevrolet Tahoe

2 Answers

2002 Toyota Sequoia power brake booster % master cylinder are bad


Mr. Clark:
It would be extraordinary for a technician to recommend a booster and a master cylinder with no previous mention from you of a possible problem in this area. In other words, the technician had no business looking at the m/cyl or the booster, unless you told him that your braking was deficient.
Here is what REALLY happened: Somewhere, I'd bet, your brake light came on, and somebody "topped off" the master cylinder, to shut the light off. Now, please understand that the brake fluid level in the master cylinder reservoir DROPS PROPORTIONALLY to the wear of the brake pads. When the tech replaced the front brake pads, he obviously had to squeeze the caliper pistons into the housings to allow the insertion of the new pads. This action forced the brake fluid from the now-compressed caliper pistons BACK into the master cylinder, and it sprayed out from under the cap, coating the cylinder and the booster. Tell that repair service that you do NOT need a booster and a master cylinder, THEY caused the problem with the fluid being everywhere. I am confident that I just saved you a significent amount of money that you do NOT need to spend. Have a great day.

Dec 29, 2008 | 2002 Toyota Sequoia

2 Answers

Breaking


there is a big rober hose by the power booster start the car up and then turn the car off then unplug the hose if you hear like air the the booster is ok but if not then most likelly the powwer booster is not good

May 27, 2008 | 2002 Pontiac Grand Prix

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