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Old 06-27-2014, 02:04 PM   #1
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Angry Cummins 6.7 Turbo (rattle/whistle)

When at cruise speed (not speeding up or slowing down) the turbo controls are making some strange whistle-high frequency rattling noise. I have driven 3 of the 2014's all have this problem.... Mine started out quite, and it's getting louder and louder..... Service folks scratching their heads.... Help !
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Old 06-27-2014, 07:49 PM   #2
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Check the bolts on the EGR valve, they get loose and suck in air and make a sound like that.
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Old 06-28-2014, 06:53 AM   #3
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Check all the tubo pipes for loose connections or holes..
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Old 06-28-2014, 10:18 AM   #4
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A lot of miles on it yet?

Has it done a good regen recently?

The cummins diesel emissions systems can get clogged ( EGR and cooler ) and struggle to allow exhaust to pull back through the system , perhaps creating the whistle sound.
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Old 07-01-2014, 04:57 PM   #5
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Is it at speed, between 55-65 MPH?
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Old 08-30-2014, 06:52 PM   #6
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If your pulling with a Dodge go to www.turbodieselregister.com and check 4th generation discussions.
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