Humming/Buzzing noise after 2500 mile trip - Ford Powerstroke Diesel Forum

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post #1 of 2 Old 07-23-2012, 04:21 AM Thread Starter
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Humming/Buzzing noise after 2500 mile trip

After driving and cutting the truck off I'm getting a humming noise coming from the engine bay that I've never heard before. Almost sounds like a compressor bleeding off air. It last for about 15 seconds. This is a different sound from the one that I normally hear from the trans area after cutting the truck off. This started after getting home from a 2500 mile trip. Anyone else ever have this problem?
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post #2 of 2 Old 07-27-2012, 05:56 AM
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Yes. Found on other forums that it is a bad waste gate control valve p/n 9E882. After shut down the egr switches and then pumping sound for 30-60 seconds. They say if you hit the brake it then stops by that also. Now if I can figure out why my regens best ever distance between them 200 miles even freeway trips but mostly 75-150 regen. Never seen a tank of 20mpg since new unless I reset when at freeway speeds and then only till regen and I have torq 2.1. Oh well till I can find that problem hope that helps you.
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