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Old Feb 19, 2007 | 07:14 PM
  #1  
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Bronc1
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Soft brake pedal

03' F150 scab 4.6/4sp auto 105,000 mi

I recently notcied that my brake pedal goes alittle further to the floor when stopping, my first brake job was done back at 70k by a ford dealer and my fluid reservoir is full. What is causing this and what do I need to do to fix it?
 
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Old Feb 19, 2007 | 07:35 PM
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torkum
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You are probably having a master cylinder problem and it will need to be replaced soon.
 
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Old Feb 20, 2007 | 06:35 AM
  #3  
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My 97' is the same way at the moment. Actually found that my vacume booster was bad, at first, so I replaced that, but had same problem. Going to replace master cyl myself in spring.
 
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Old Feb 22, 2007 | 09:04 PM
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Could this be a bad caliper, if so is the front or rear more likely?
 
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Old Feb 22, 2007 | 09:32 PM
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Check your vacuum lines to your brake booster.
 
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Old Feb 23, 2007 | 07:49 PM
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StephenH
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bleed your brakes. Cheap fix.
 
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Old Feb 24, 2007 | 07:44 AM
  #7  
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97-F150-97
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Originally Posted by Bronc1
03' F150 scab 4.6/4sp auto 105,000 mi

I recently notcied that my brake pedal goes alittle further to the floor when stopping, my first brake job was done back at 70k by a ford dealer and my fluid reservoir is full. What is causing this and what do I need to do to fix it?
Well, you have 35,000 miles on your pads. that is not too far from the life of some pads. It sounds like a lot of us are changing them at this interval.
Also if you do a lot of hard braking your pads my have worn down.
If you have thin pads, your pedal is going to go closer to the floor. and it will continue as your pads turn into nothing. Same as if your rotor thins out.
the farther your caliper/pads have to squeeze shut....the more fluid is going to be drawn into the lines. when you release the brake the fluid comes back out and returns to the resvoir and looks full. I'd start there first.
Check your brake pads and rotor.
 
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Old Feb 25, 2007 | 08:51 AM
  #8  
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3-RANGERS
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Smile

Hello Bronc1, It does sound like a master cylinder problem. You probably have 4 wheel disk on this truck and there is not a whole lot of fluid that returns to the master cylinder when you take your foot off the brake pedal. Do you feel as though you have to press really hard on the brake pedal to make the brakes stop you or are you just needing to press the pedal further to get it to stop? Joe
 
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Old Feb 26, 2007 | 09:28 PM
  #9  
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A new find, sometimes the brakes are soft and sometimes they are normal.
 
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Old Feb 26, 2007 | 09:39 PM
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my truck is in the shop as we speak with the same problem and will find out tomorrow what the story is so i will let you know.....
 
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Old Mar 1, 2007 | 08:58 PM
  #11  
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Thanks for all of the info guys if this problem continues I will put it in the shop and I'll let ya'll know.
 
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