Question about 2005 Pontiac Sunfire

1 Answer

I replaced the front rotors and break pads on my daughters sunfire now its acting like the booster is loosing vaccum. i know it is not because i checked for any and all possible leaks. what it actually does is when traveling at road speed the first time you apply the brakes the car stops completely normal. if you let off the brake and reapply it ill go all the way to the floor.and takes an extra effort to stop. when i replaced the pads i followed the normal procedures given by most repair manuals.meaning i did not break any lines loose.i only used a c clamp to push the caliper piston back. im a former mechanic and ive been putting this type pads on for many years. ive never had this paticular problem. any help suggestions or questions would be much appriciated. ps i did after the fact go back and bleed the entire system and the brakes worked fine for a few days then went back to acting the same way. before i replaced the pads and rotors everything was working properly.

Posted by on

  • dgwtruckn_11 Mar 24, 2011

    how could the system have an air pocket if it was not exposed to air initially? but i will bleed the system again. and that is the procedure i used right rear then left then right front then left no air . its got me stumped.

×

1 Answer

  • Level 2:

    An expert who has achieved level 2 by getting 100 points

    MVP:

    An expert that gotĀ 5 achievements.

    Governor:

    An expert whose answer gotĀ voted for 20 times.

    Hot-Shot:

    An expert who has answered 20 questions.

  • Expert
  • 136 Answers

The brakes need to be bled again. Start with the furtherest bleeder from the booster and work your way around the car. Bleed with the cap off the fill reservoir and keep the fluid topped off as you bleed. There has to be an air pocket somewhere in the system.

Posted on Mar 23, 2011

  • TJ McDonald Mar 24, 2011

    It kind of has me stumped too, especially since it sounds as if you did the job correctly and you have done it before. Being that the brake system is a completely sealed system, you know that it must have no air in it to work correctly. That is why I am starting with the simple first. Did the fluid level change after it was topped off and test driven after the initial brake job and test drive?

×

1 Suggested Answer

6ya6ya
  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

Hi,
a 6ya expert can help you resolve that issue over the phone in a minute or two.
best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
the service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.
goodluck!

Posted on Jan 02, 2017

Add Your Answer

Uploading: 0%

my-video-file.mp4

Complete. Click "Add" to insert your video. Add

×

Loading...
Loading...

Related Questions:

1 Answer

My 2005 chevy colorado front breaks locked up and caught fire on the front right side I replaced the brake pads rotors master cylender abs pump and calibers and the two small break lines on both sides...


Sounds to me that your power brake booster is bad or your portioning valve might not be working correctly there is a button on the portioning valve that can be pressed try that or replace it!

Nov 14, 2013 | Cars & Trucks

1 Answer

Cavalier master cylinder


You have air in your system, you need a helper to bleed the air out. The master cylinder is what ur brake fluid resivore is sitting on, the large round object behind it is the brake booster (looks like a squished basket ball) these will be on the fire wall driverside

Nov 05, 2012 | 1999 Chevrolet Cavalier

1 Answer

Just bought 2003 GTI for daughters first car when pressing brake pedal I hear a clicking/knocking sound in left front tire area only when applying breaks? had CV axle changed on that side


If it only does it when using the brakes, the problem is most often something with the brake caliper or rotor. The caliper or the pads may be loose.

Aug 02, 2012 | 2003 Volkswagen GTI

1 Answer

How to fix my front breaks?


Here watch this video

http://www.youtube.com/watch?v=kt2fvHlzv-4

Make sure you replace both your rotors & pads. Don't just replace one side.

Feb 07, 2012 | 1987 Buick Electra

2 Answers

Spongy brake pedal apears to be leaking fluid from brake booster


check or adjust brake pedal, check brake booster or replace new one, check pedal return spring and bushing, check all wheel cylinder or replace, check brake shoe or brake pad, check brake fluid or replace,.

Apr 03, 2011 | 1999 Pontiac Sunfire

1 Answer

I have extreme grinding when I slam my breaks, 2000 pontiac sunfire


your brake pads are worn down to the metal replace brake rotors and brake pads ASAP.YOU ARE IN THE DANGER ZONE!!!!!

Apr 02, 2011 | 2000 Pontiac Sunfire

1 Answer

I have an 03 Chevy tracker 4 cyl 2 wd I've been having problems with the front brakes locking up when driving. It happens at different times and different driving conditions. Sometimes pumping the pedal...


if both front wheels are dragging it is probably the master cylinder, if only one wheel is dragging it could be the caliper or the brake hose, jack the car up and have some one apply the brakes and try to turn the wheel the instant the brake peddle is released both wheels should start turning the instant the peddle is released....hope this helps

Nov 13, 2010 | 2003 Chevrolet Tracker

2 Answers

2001 Montero brakes. R&R rear rotor, pads & calipers but the brake pedal travel is still very slow to "reset". I am certain my front's need new rotors, pads and possibly calipers due to the...


Disk brakes are automatically self adjusting. If you have too much travel in the pedal, bleed the brakes. Let us know if you need the procedure.

Jul 02, 2017 | 2001 Mitsubishi Montero

1 Answer

1997 chevy cavalier brake problems


A slick surface has nothing to do with it, it would actually be less of a noise on a slick surface,and if its a wet road, the water acts as lubricant on the pads, it sound like the job was done wrong, a pad clip broke, they did not clean the rotor( bad groves or chips in rotor, may had needed a resurface)
or they did resurface the rotor too good and the pads glazed over and are like to hard surfaces touching.
You need someone to pull the front two tires and inspect the calipers and rotors, someone that knows what they are doing. If the pads are still new and the rotor is slick,(very smooth ) they need to be ruffed up with a coarse sand paper, or the sand disk that mechanics use on rotors.

Mar 31, 2009 | 1997 Chevrolet Cavalier

Not finding what you are looking for?
2005 Pontiac Sunfire Logo

Related Topics:

22 people viewed this question

Ask a Question

Usually answered in minutes!

Top Pontiac Experts

yadayada
yadayada

Level 3 Expert

75822 Answers

Colin Stickland
Colin Stickland

Level 3 Expert

22156 Answers

Jeff Turcotte
Jeff Turcotte

Level 3 Expert

8210 Answers

Are you a Pontiac Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...