What would cause a roaring sound in the engine of my car? on 2004 Chevrolet Impala

I notice a roaring sound in my engine when I get about 25mph or so. Now I hear a gurgling sound when I start to drive.

by in Madisonville, TN on November 29, 2012
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1 answer
ANSWER by , November 30, 2012
could be water pump going bad or related idler or tensioner