Question about 2005 Ford Escape

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2005 Ford Escape Hissing sound

Once the vehicle is started there is a constant hissing sound coming from under or behind the dash on the drivers side, until the brakes are applied. it only goes away when the brake pedal is depressed.

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The power brake booster has a bad valve. I can't suggest where to find a new valve for it, but you can buy a rebuilt replacement. They are usually not hard to put on.

Posted on Jul 02, 2009

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You need a power brake booster.

Posted on Jul 02, 2009

  • Twii Aug 29, 2011

    Hi,had the same problem with my 05 Escape,the power brake booster was repaired by my mechanic, he opened the booster and mended a cracked rubber seal, and i have been driving the car for the past 3months and the noise has not returned.Worthy of note,is that it cost me the equivalent of $10


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How to fix it

Posted on May 05, 2013

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