There is a vacuum line that runs into the control switch. Then to the function control. Some areas they are made of a plastic and some are a small rubber hose. See if you can pinpoint the sound. If the plastic line has split or broken you can use a patch it with another rubber hose putting it inline. Some of those plastic vacuum lines are a pain when they become brittle.
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Wednesday, December 1st, 2010 AT 4:05 PM