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All Info About Auto Repair: Troubleshooting The Brake System
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Troubleshooting The Brake System


Brakes acting funny? Better check here before it's too late.
More...
» Part 1: Braking symptoms
» Part 2: More symptoms
» Part 3: More symptoms
 
  • One Or More Brakes Lock Up:
    When you step on the brakes, the car veers sharply to one side or the other and a wheel may or may not lock up.

    Possible causes:
    1. Brake pads/shoes are loose or broken: Replace the brake pads/shoes as required.

    2. Bad front disc caliper or rear drum brake wheel cylinder: Replace or rebuild both front calipers. Replace or rebuild both rear wheel cylinders.

    3. Loose or bad front wheel bearings: Replace bad wheel bearings. Repack and retighten loose wheel bearings.

    4. Brake pads/shoes are contaminated with grease or oil: Replace the brake pads/shoes as required.

    ~~~~~~~~~~

  • The Brakes Squeal When They Are Applied:
    When you step on the brakes you hear a loud, or maybe not so loud, screeching or squealing noise. This noise may come and go, or remain constant. The car may or may not pull to one side when the brakes are applied.

    Possible causes:
    1. Dirt or brake dust accumulating on the pads/shoes: Clean and sand brake pads/shoes and rotors/drums. These will probably return in a week or two.

    2. Brake pads and/or brake shoes are worn out: Replace the brake pads/shoes as required.

    3. Brake pads/shoes and rotors/drums are glazed due to overheating: Clean and sand brake pads/shoes and rotors/drums.

    4. Audible Wear Indicators are contacting the rotors: Replace the brake pads.

    ~~~~~~~~~~

  • Brake Pedal Pulsates And/Or Chatters When Braking On Slippery Surfaces:
    This is a normal condition for Anti-Lock Brakes (ABS). Do not pump the pedal and maintain a constant pressure on the brake pedal. Let the ABS do all the work.

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  • Brakes Make A Rhythmic Scraping Noise At Low Speeds:
    When you step on the brakes, you hear a scrapping noise in time with your speed. You may or may not hear the noise when you are braking from a higher speed, but it will become audible when the car slows down. The sound may start suddenly and get progressively worse.

    Possible causes:
    1. Brake pad/shoe material completely worn away. Metal backing plate rubbing on brake rotor/drums: Replace the brake pads/shoes as required.

    2. Loose or bad front wheel bearings: Replace bad wheel bearings. Repack and retighten loose wheel bearings.

    3. Brake rotors have excess run out or are warped. Brake drums are out of round or warped: Machine or replace front disc brake rotors. Machine or replace rear brake drums.

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  • Clunking Noise During Braking:
    Whenever you step on the brake you hear a clunking or banging noise. It may be a loud or not so loud noise and the severity may be based on the vehicle speed and how hard you apply the brakes.

    Possible causes:
    1. Loose or broken front end steering parts: Check and replace loose and broken parts as required.

    2. Loose or broken suspension parts such as a shock or spring: Repair or replace suspension parts as required.

    3. Disc brake mounting hardware broken, missing or loose: Repair or replace mounting hardware as required.

    4. Disc brake pads loose in the calipers: Tighten or replace disk pad mounting hardware.

More...
» Part 1       » Part 2       » Part 3

Additional Information provided courtesy of
ALLDATAdiy.com and Warranty Direct
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