Quote:
Originally Posted by Canefan
Ok - so crimping that vacuum line eliminated the sound entirely. Does that mean that it is entirely benign or do I need to have it taken care of?
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It means something is wrong with either the exhaust/actuator. You probably need a new muffler. I say muffler bc the metal valve flap is inside the muffler. The vacuum actuator is just the part that moves the metal exhaust valve. Take it to a dealer and see what they say. Tell them you tested it by crimping off the vacuum line. Sure bet they will fix it.
