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Why does engine make a grinding noise

(2007 Pontiac Grand Prix)
in Santa Fe, NM on February 11, 2011
When the gas is pressed down th eengine makes a grinding niose
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Popular Answer
Your engine mounts may be broken. Without functioning engine mounts, the engine will rest onto the frame of the vehicle causing the grinding noise whenever you accelerate because of the engine shaking around on the frame.
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