1990 Honda Accord Brake Issue

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  #1  
Old 09-02-14, 10:58 AM
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1990 Honda Accord Brake Issue

1990 Honda Accord LX, 4Dr, AT, 250K miles. Brake pedal goes lower and lower when slowly stop at red light. Eventually, it will close to floor and I have to release brake pedal and re-apply brake to stop car. This only happens when slowly stop especially downhill stop. If I suddenly press brake, it works and car stop. After some reading from car repair forum, it seems to be the master cylinder problem. Is my assumption correct? Do any other experts have any other suggestions?
 
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  #2  
Old 09-02-14, 11:17 AM
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Have you checked your brake fluid level? If it's low, look for leaks at the master cylinder and at the wheels.
 
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Old 09-02-14, 11:32 AM
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The fluid level is between low and high. I watched for months and didn't seem have leaking brake fluid.
 
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Old 09-02-14, 01:42 PM
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Do the brakes get better if you pump them? have you checked the pads and shoes for wear?
 
  #5  
Old 09-02-14, 01:53 PM
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Yes, brake gets better if I re-pump it. All pads and shoes are more than half of original thickness when I installed them.
 
  #6  
Old 09-02-14, 01:53 PM
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That's a sign of air in the brake lines, bleeding them and adding fluid as needed should rectify the problem.
 
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Old 09-02-14, 01:54 PM
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Does your car have ABS? ......
 
  #8  
Old 09-02-14, 02:25 PM
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Honda Brake Issue

Your brake issue definitely sound like a internal leak from one of the seals in the master cylinder, not air in the lines. Air in the lines would be more like a mushy feeling when you hit the binders, the pedal would not continue to drop away. Master cylinder for sure.
 
  #9  
Old 05-19-15, 03:54 PM
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Changed master cylinder and problem is fixed.
 
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