Compression Ignition Addict
Join Date: Sep 2007
Location: Eula, TX
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Just an idea...my Ex had a whine while sitting still, but while in gear. It sounded like it was coming from under the truck, after a lot of searching, we figured out it was coming from the power steering pump. After draining the system (fluid had most likely never been changed), flushing it, and refilling, the whine is long gone. I spoke to some 7.3/PS techs and they stated that this was a fairly common occurence.
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2008 6.4L 4X4 Lariat
6.4L w/SCT Livewire, Deleted, and loved! About to hit 200,000 miles!
RIP 2003 7.3L Limited Excursion 4X4 & 2007 6.0L Lariat FX4