have a 00 ford f150 5.4 has a high pitch noise coming from engine compartment?

2000 FORD F-150
214 MILES
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DPSPLINTER
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from the time i start it till it shut off high pitch noise continously.
Dec 15, 2011 at 7:09 PM
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FIXITMR
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whistle? squeal? whine? any changes in volume pitch?
Dec 15, 2011 at 7:42 PM
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FIXITMR
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use tube or stethoscope to isolate it.
Dec 15, 2011 at 7:43 PM
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