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screeching/whine noise engine any ideas?
I have a screeching or whining noise I can't figure out on my early 99 7.3. It almost is comparable to normal turbo whine, but with slightly metallic sound.
It is coming form the engine compartment and is totally intermittent. Sometimes I won't hear it for 10 miles and then sometimes it will sound off every 10 seconds to 1 minute. It seems worse under heavy load and turbo boost. I am guessing it is turbo related, but not positive.
Any info would be appreciated.