Mechanics

HIGH PITCH WHISTLE

1998 Ford Expedition

Engine problem
1998 Ford Expedition V8 Four Wheel Drive Automatic 133000 miles

My son hit a deer on wed. Of this week. The truck was check by a body repair shop and only minor body damage was found. Today my wife called and stated that there was a high pitch whistle whe the RPM gauge went between 1500 and 2000. When idling it operates noramlly there is no hesitation upon acceleration or when slowing down. This sound is intermittent when crusing at 40. All gagues are in the normal range I have check and can find no loose hoses or leaks to the air filter lines. The serpintine belt does not appear to be slipping. Do you have any ideas
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G81hd
December 2, 2007.



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