Join Date: Jan 2013
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hard braking, please help
Problem with my f250: coming to a stop initial braking is fine and works as expected, but if I let up on the pedal and reapply the brake goes stiff as a rock. If i keep my foot on the pedal it slowly gets softer (10 seconds or so). Everything goes back to normal once Im on the gas again for a few seconds.
Booster and master cylinder were replaced this weekend. All lines bleed.
Vacuum appears to be okay at the booster (using my thumb).
WHat else should I be looking at?