my car produces noise or gives revs time to time itself even the car is in neutr on 2003 Honda Civic

my car gives reve time to time when the car either is in neutral not moving or when it is moving too..it automatically gives revs and make noise as if the gas pedal is press and release press and release..any solution pls

by in Miles, TX on April 27, 2013
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1 answer
ANSWER by , April 29, 2013
Please clarify ,