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Buick brakes repair questions and answers

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  • joycebeaman
    joycebeaman - 2005 Buick LeSabre - Brakes - 8/7/2013
    Do I have a brake problem or a motor mount problem
    Car vibrates wildly when applying brakes when going downhill. Gets worse as car warms up.
     
    • wbrockstar
      8/7/2013 wbrockstar
      Does the brake pedal pulsate really bad when braking?If so,it means you need to get front rotors turned or replaced if they cant be turned.Put new pads on too so you wont put grooves in the new rotors.Brakes always get worse,the warmer they get or the more they're used in rapid succession.Broken motor mounts will normally make clunking or banging noises when accelerating and deaccelerating or when putting car in gear.
  • jtmlad
    jtmlad - 2004 Buick Century - Brakes - 7/31/2013
    What is the best pads, metallic or ceramic
    Should rotors be different for different pad material?
     
    • Jimm
      7/30/2013 Jimm
      The 'best' brake pads are the ones formulated for and equipped with your vehicle from the factory. For example, for the front disc pads, for the 2004 Buick Century with the 3.1L engine - the brake pads should be; semi-metallic.
      Stick with the proven and known name brands for all brake parts; Akebono, Bendix, Wagner, Raybestos, Beck-Arnley, AC Delco, Monroe - these manufacturers also supply direct to the vehicle manufacturers as original equipment (OEM) suppliers.
    • John's Auto Repair
      7/31/2013 John's Auto Repair
      ceramic pads can take more heat without brake fade
  • debrab
     
    • Regency
      6/30/2013 Regency
      Is it loosing any brake fluid (master)? Any kind of leak could cause a soft pedal. Also, the pads may not have been adjusted corrected when replacing.
    • John's Auto Repair
      Master cylinder could be leaking internally. Which pads did you replace, front or rear? If no leaks are
      found try replacing master cylinder and bench bleed it before installing
  • jonesgolfer
    jonesgolfer - 2007 Buick LaCrosse - Brakes - 5/22/2013
    Location of abs sensors
     
    • HouseCallAuto
      5/22/2013 HouseCallAuto
      The abs wheel speed sensors are integral with the hub and bearing assemblies and cannot be serviced separate from the hub.
  • susie48413
    susie48413 - 1997 Buick LeSabre - Brakes - 5/12/2013
    Brake light on suddenly. no prior warning of any brake problems (pads and rotors 8/2012). pedal goes to floor.
    i don't think this could be pads or rotor since both replaced not long ago. no grinding, just pulls to left and barely stops. was fine one minute and barely stopping the next. wondering what else this could be. checked fluid, seems to be ok.
     
    • CVO
      5/12/2013 CVO
      A bad brake master cylinder. The master cylinder is where brake fluid gets compressed. Pressure on the brake fluid cases the brakes to be applied to the wheels. If your master cylinder doesn't work properly, or only works sometimes, you're going to lose braking power, and occasionally your brake pedal will go all the way to the floor.

      A bad brake booster. The booster is a mechanism that uses vacuum pressure to take the force being applied to the brake pedal and amplify it. If the booster is bad, then the full amount of force needed to activate the master cylinder and pressurize the brake fluid isn't going to be there. The pedal will go all the way to the floor and the car will be harder to stop.
      CVO
      5/12/2013 susie48413
      thanks for the info. don't know which i should wish for. they both sound like very expensive problems to fix.
      CVO
      5/12/2013 CVO
      Have an assistant to pump the brake pedal while you're looking in the brake reservoir. If there is a jet of brake fluid flows back to the surface instead it's going to the brake lines to stop the car, then the master cylinder ( primary and secondary ) seals are broken. Use safety glass.

      If it is a bad brake booster, then there is no air escaped through the air intake vacuum hose when the brake pedal is applied ( the air intake vacuum hose to the brake booster has to remove prior to do the test)
      CVO
      5/12/2013 susie48413
      when i pump the brake pedal i hear what sounds like air coming out. i have no ability to mess with any parts - would probably make it worse. i'm just wondering if the "air sound" indicates hose mentioned above
      CVO
      5/12/2013 CVO
      If there is an air escaped sound, either that vacuum hose is broken or loose.
      CVO
      5/12/2013 susie48413
      thx
  • AutoMD Member
    AutoMD Member - 2004 Buick Park Avenue - Brakes - 5/11/2013
    How to Bleed Brakes with a Tool
    How to Bleed Brakes with a Tool for Buick Park?
     
  • johnnyi
    johnnyi - 1999 Buick LeSabre - Brakes - 5/10/2013
    I have a squeak when I'm driving but quits when I hit the brakes
    Wheel noise squeaking sound when I drive but quits when I hit the brakes it's a 2012 Taurus pads look good
     
    • HouseCallAuto
      5/10/2013 HouseCallAuto
      No mystery, you need new brake pads. Look at the pads again. There s nothing else that would cause that symptom.
  • jmatsufuji
    jmatsufuji - 2004 Buick Park Avenue - Brakes - 5/8/2013
    The ac blows hot on driver side and cold on passenger side
     
    • serhatbuyruk
      5/8/2013 serhatbuyruk
      one of the tunnels from your side or passenger side would be engorged and it prevents the air passing.. that gives the air blowing from this side to another exits .right now that you can do just check it if is okey (you can poke with a cable or wire. the problems come out cause of the ac's distiribitor.make a visit an expert. there is nothing doing from you.. have a nice day..
      serhatbuyruk
      5/8/2013 CVO
      Cool on the driver side and hot on the pass side is almost always caused by a faulty pass side blend door actuator. If it were the reverse (cool on pass side and hot on driver side the cause is always that the system is low on refrigerant.). Hope this helps.
      serhatbuyruk
      5/8/2013 HouseCallAuto
      It is the reverse
    • HouseCallAuto
      5/8/2013 HouseCallAuto
      This is caused by a low refrigerant charge.
  • MichaelBrickwood714
    MichaelBrickwood714 - 1999 Buick Regal - Brakes - 4/28/2013
    Why does my brak pedal go to the floor after replacing front pads?
    I thought it might be the master cylinder so i replaced it also and bench bled it and then the lines and still no pedal and barely any brakes
     
    • Jimm
      4/28/2013 Jimm
      Check the brake bleeding procedure; start with the wheel furthest from the master cylinder - usually the left rear, then right rear - and so on. Be sure to use clean, fresh brake fluid.

      From your description, the lack of pedal pressure would indicate there is still residual air in the brake system at some point.
  • MichaelBrickwood714
    MichaelBrickwood714 - 1999 Buick Regal - Brakes - 4/28/2013
    Why does my brake pedal go to the floor?
    I replaced the pads then the pedal went to the floor so I replaced the master cylinder and bench bled it and then the lines and still no pedal and barely any brakes
     
    • Jimm
      4/28/2013 Jimm
      Check the brake bleeding procedure; start with the wheel furthest from the master cylinder - usually the left rear, then right rear - and so on. Be sure to use clean, fresh brake fluid.

      From your description, the lack of pedal pressure would indicate there is still residual air in the brake system at some point.
  • MichaelBrickwood714
    MichaelBrickwood714 - 1999 Buick Regal - Brakes - 4/28/2013
    Why does my brak pedal go to the floor after replacing front pads?
    I thought it might be the master cylinder so i replaced it also and bench bled it and then the lines and still no pedal and barely any brakes
     
    • Jimm
      4/28/2013 Jimm
      Check the brake bleeding procedure; start with the wheel furthest from the master cylinder - usually the left rear, then right rear - and so on. Be sure to use clean, fresh brake fluid.

      From your description, the lack of pedal pressure would indicate there is still residual air in the brake system at some point.
  • kelsey
    kelsey - 2002 Buick Regal - Brakes - 4/18/2013
    How to fix abs module
    Abs and trac on light is on
     
    0 answer
  • AutoMD User
     
    • HouseCallAuto
      4/8/2013 HouseCallAuto
      After collapsing the pistons with a c-clamp and installing new pads and re-installing the calipers, and all of this is done WITHOUT opening up the hydraulic system, the first one or two applications of the pedal should go to the floor and then the pedal should become normal. If the pedal was normal before the brake job I am not sure I could guess what has happened here except that what I have seen happen in a rare occurrence is that after the new brakes are installed and you are all done and you step down on the pedal a few times (to pump up the pedal of course), I have personally formed a habit to avoid what happened to me once on a clients car, and this might be YOUR cause as well. When the brake pedal is normal and the pedal travel does not go beyond say two inches, it is a little risky to then allow the pedal to go the floor even once or twice because the piston and seals inside the master cylinder bore come into contact with the dirty / pitted / unsmooth portion of the master cylinder bore and this can cause a seal failure. The way to avoid this (too late now though) is to step down many short partial brake applications (don't exceed normal pedal travel) instead of two full to the floor pedal applications. In short, of you bled out the air and the pads are installed and everything looks as it should, then the master cylinder failed during the pump up for the reason I detailed.
  • AutoMD User
    AutoMD User - 2002 Buick Rendezvous - Brakes - 4/8/2013
    Why won't my brakes work?
    I had new rotors and brake shoes put on my vehicle now the brake pedal goes down to the floor. there is no fluid leak and no air in the lines. is there a reset button or magic trick?
     
    • Mike
      4/8/2013 Mike
      How do you know there is no air in the lines? If you replaced front pads and rotors only, the pedal should not change.
      Mike
      4/8/2013 AutoMD User
      we bled the brakes, no air came out.
      Mike
      4/8/2013 Mike
      If there is no leak or air, the master cylinder is faulty. Did you open the lines while replacing the pads and rotors? Did you have a firm pedal before?
  • jr_mitchell1964
    jr_mitchell1964 - 2006 Buick Rainier - Brakes - 3/24/2013
    Why won't brake fluid reach my rear brakes
    I changed the left rear brake caliper due to uneven pad wear, when i started to bleed the system i could not any fluid to the rear brakes just a drip or two. the brakes were working fine before this.
     
    0 answer
 
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