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Loud hissing sound from break pedal....

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Old 12-05-2013, 11:21 AM
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Default Loud hissing sound from break pedal....

My son went out to start my jeep (1999 jeep grand cherokee this morning and pressed the break. He pressed it so hard that I now have a loud hissing sound from my break pedal. Has this ever happened to anyone or do you have any idea what it could be?

Thanks!
Old 12-05-2013, 01:26 PM
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Diaphragm in brake booster has a hole in it maybe, get a new brake booster.

Gonna be around a hundred bucks, labor not included.

Kid may have future as NFL kicker.
Old 12-06-2013, 11:01 PM
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I agree. Mine has the same thing only when you press the brake hard. I'm putting the job off until spring.
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