2003 Honda Civic • 4 cylinder FWD Manual • 203,000 miles

2003 honda civic manuals trans. Rattling sheet metal sound coming from engine compartment at medium-high RPM's. Have checked heat shield, exhaust pipe connections, and removed catylaic converter and shook to see if it was breaking up. Everything seems ok. The noise is obvious. What else could it be.
April 2, 2011.

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