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My 1991 Saturn makes a rattling sound in the engine

My 1991 Saturn makes a rattling sound (as if there was something loose in the engine) when idling, the sound comes and goes randomly

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This is more than likely the exhaust manifold heat shield. Check around the small bolts that hold the shield to the manifold. It usually cracks in a circle around the head of the bolt. Press on the top and bottom of the shield (WHEN COOL) and rock it. You will see where the shield is cracked. The shield is available as a service part, and is not expensive.

Posted on Jul 24, 2009

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