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Answered 2008-11-05 00:45:48

It is a heat shield on your exhaust pipe or muffler. The hot pipe when splashed by cold water cause the metal to expand and contract so quickly the weld cracked off and the heat shield now rattles It is a heat shield on your exhaust pipe or muffler. The hot pipe when splashed by cold water cause the metal to expand and contract so quickly the weld cracked off and the heat shield now rattles

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