2002 Ford Other

I have a 2002 ford taurus, 6 cylinder, 3.0-it makes a screeching sound inside the engine, but its not any of the belts or the alternator. I did take it in and the camshaft position sensor was replaced, but it is still shutting off (engine)-no changes. : ( [/B] It's got 82,000 miles on it, if that helps.? Another thing that's strange is the engine light does not come on to warn me that there is a problem with the car. :
April 25, 2006.

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