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More than likely the bearings in the fuel pump are failing. This is sometimes one of the first signs you will hear just before the fuel pump locks up. Replace the fuel filter ASAP. If the whining is still there, replace the fuel pump. A clogged fuel filter will overwork the pump, and sometimes cause it to whine.
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Does wining noise from the fuel pump of a 1997 Astro Van indicate that the pump is failing?
PLAIN AND SIMPLE, YES
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