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Author Topic: Wierd Braking experience  (Read 3369 times)
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jatnpaky
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« on: May 23, 2003, 09:18:28 PM »

I had a wierd experience with my brakes while driving home from work today.  I was driving approx. 25 MPH, approaching a red light in traffic.  When I stepped on the brake pedal, I had no brakes, but before I had any time to panic, it seemed that my anti-lock system kicked in.  Can anyone tell me what just happened.  It did not happen again.  I only live 1.5 miles from my home, so it was a short trip, but this happened in the first .5 miles.  I know as soon as I take it in to the dealer, they will tell me there is nothing wrong, so any input from you guys would be helpful.  Thanks!   :code7:  
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Jackie
"RED DOG" '01 FWD GT
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« Reply #1 on: May 24, 2003, 07:25:31 AM »

Jat
was the brake pedal hard to push?
or did it go down excessivly?

I know there was a TSB on 2002 for brake booster check
not sure if it is related
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jatnpaky
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« Reply #2 on: May 24, 2003, 11:36:30 AM »

Aside from the brakes initiall being non-responsive, there was no noticable difference in the brake pedal itself, until the rumbling from the anti-lock started.  I called the dealer's service department and spoke to the manager this morning, and he tried to tell me that the only thing he could come up with, was that the brake sensors probably sensed a gravelly road surface and compensated for that.  I told him that I was on smooth, dry pavement, and he said, "well just drive it around, and if you have anymore problems with it, bring it in."  I told him that I hoped I would not have to hit something before they gave me any attention.   Sad  
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Jackie
"RED DOG" '01 FWD GT
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« Reply #3 on: May 24, 2003, 09:10:32 PM »

If the initial no brake phase was not accompanied by any brake pedal vibration or unusual sounds than it was probably a problem with the base brakes and not the ABS.  ABS should provide very quick feedback to the pedal as it modulates the brake pressure.  While it is true that ABS can extend braking distances on gravel roads, the system does not "compensate" for that.  An ABS brake system monitors the wheel speeds through sensors and will release some brake pressure when a wheel approaches lock up conditions.  ABS is not capable of increasing brake pressure; it can only reduce the pressure.  Therefore, in your situation brake pressure probably came on suddenly after an initial delay (for unknown base brake reasons) and this sudden surge of pressure caused the wheels to near lock up conditions and the ABS system activated to prevent this lockup.
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