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LinkBack | Thread Tools | Display Modes |
01-31-2008, 06:30 PM
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Unknown engine noise flutter during deceleration
I am experiencing a flutter or bog noise coming from what sounds like the turbos when I am in the decelaration from being on the interstate. The noise seems to go a couple times and the rpms tend to adjust off it down to idle when the noise stops. I was wandering if anyone has experienced this. I am not a teck guy but feels like something is catching as the speed is decreased. PLEASE help if you can.
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03-27-2008, 07:29 PM
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I noticed the same thing on my truck. Any ideas?
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03-28-2008, 04:08 AM
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Its a normal noise for a turbo diesel engine when you get off the gas. the noise is caused by the airflow from the turbo bouncing off of the compressor until it equalizes.
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03-28-2008, 04:18 AM
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No not yet I am hearing from the thread its normal. As far as the dealership goes they are telling me it becouse the turbos and computer are not in sink with the larger tires and when there is a programmer to calibrate these tires it will go away most likley.
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03-28-2008, 06:04 AM
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My dealership reprogrammed the computer to match my 35s so the speedo and shift points are correct. I still get the noise. Its always been there. It got much more noticeable when I installed my intake.
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03-28-2008, 06:19 AM
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You will hear the same noise if you turn off the motor at high idle. It's normal, unless of course your hearing something else. Can you record the noise?
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03-28-2008, 07:52 AM
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Quote:
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03-28-2008, 07:54 AM
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We should start a list of all the interesting explanations a service manager/sales person/dealer/etc has given for something...
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03-28-2008, 07:56 AM
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thanks for the input guys. i figured it was normal or from the turbos. I just noticed it more after i put the lift and tires on. Maybe i was just listening more carefully.
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03-28-2008, 07:57 AM
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How large did you go for tires on the lift? I know they can program for up to 35s.
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