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Old 05-07-2012, 09:43   #1 (permalink)
1993 F-250 plow truck
 
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Location: Snow Belt, Geauga County Ohio
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brake padal goes "bump"

My recently purchased 2008 gas Escape just turned 83K and is providing comfortable, dependable transportation. My only concern with it is that when rolling to a stop, the brake pedal will "bump" down what feels like about a half inch towards the floor. When this happens, it does not affect the stop distance. It has disc on front, drums on rear. It does not do this every time I stop. Warm or cold doesn't matter. I have not noticed it ever under hard braking. There is no pulling right or left in the steering before, during or after teh bump. I have had it happen with the radio and A/C off and there is no sound or sensation familiar to ABS being activated. Have not seen any codes or indications on the dash.
Should I be thinking about a new master cylinder? It feels like the primary or secondary piston is hanging up occasionally and when enough pressure gets behind it and it breaks loose... for lack of a better description :<)
Any direction you can provide is greatly appreciated!
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Old 05-07-2012, 12:07   #2 (permalink)
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Re: brake padal goes "bump"

Check all pads are clean , free and sliding o.k in calliper . Check disc / rotor run out .Wont cost you anything before you start buying / replacing master cyl . perhaps needlessly .
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Old 05-08-2012, 14:44   #3 (permalink)
1993 F-250 plow truck
 
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Re: brake padal goes "bump"

Will do, thank you Sir!
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Old 05-08-2012, 14:49   #4 (permalink)
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Re: brake padal goes "bump"

Glad to help . Hope it's something minor like , as suggested , dirt / dust in calliper . If not and still having problems , get back to forum and someone will try to help and advise further .Let's know how you get on ?
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