Question about Ford E-350

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Spongy brakes after sitting in storage for a month I picked up my 1995 motor home (E-350 chassis)and immediately noticed a difference in the braking. It normally requires barely a touch on the brakes to stop it HARD but now, I press on the brakes and the pedal gradually goes down and the RV coasts to a stop. Even after stopping I can continue to press the pedal all the way to the floor. And when I let up on the pedal, it slowly comes back up instead of "popping'' up like it used to. My armchair mechanics insist it is the master cylinder but the shop I have taken it to for repairs isn't convinced - they think it could be the brake assist/vacuum module. Another shop says it sounds like the wheel calipres aren't releasing. I don?t know what to do now. What do the symptoms sound like to you?

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Working on a similar problem myself , if vehicle equipped with rear anti lock brakes , look into the rabs module along the frame with all the lines going to it.. deposits have possibly gotten into the dump valve, have read tapping on it may revive it.

Posted on Oct 21, 2009

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It sounds like master cylinder except for the slow pedal coming back up. That sounds different than bad cylinders that I've had.

Posted on Sep 10, 2009

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