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Old 05-12-2010, 07:59 AM
atb1137 atb1137 is offline
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Default 4.7 engine hissing

i have an 03 4.7 with 106,000 the last 3,00 miles ive noticed a louding hissing/ scraping noise under the hood. it keeps gettin louder .is very loud at idle but when you start driving it isnt as loud.. i t sounds like the fan? any advice ???thanks
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Old 05-12-2010, 09:22 AM
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If you suspect something in the accessory drive system, take the belt off to confirm and run it down from there.
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Old 05-12-2010, 10:14 AM
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Quote:
Originally Posted by Remerson228 View Post
If you suspect something in the accessory drive system, take the belt off to confirm and run it down from there.
I completely agree with this method. Keeps you from spending a bunch of time on items that may not have anything to do with the problem. Start simple and head out from there.
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Old 05-12-2010, 10:39 AM
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I agree with Randy as well you have like 5 poles with bearings up there. start simple.
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Old 05-13-2010, 12:46 AM
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ok ill give it a shot thanks
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