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whining when accelerating

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Old 02-11-2010, 02:43 PM
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Default whining when accelerating
I have a 2005 Ram 5.7L hemi and there is a whining noise when I accelerate, seems to be RPM related and stops around 50 mph. Doesn't seem to affect the power and stops when you release the accelerator. Any ideas?
 
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  #2  
Old 02-11-2010, 02:44 PM
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rear end and gears whining?
 
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Old 02-11-2010, 02:53 PM
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No..sounds like it's coming from under the hood.
 
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Old 02-11-2010, 02:55 PM
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some cold air intakes will induce a whining noise while accelerating if you removed the engine resonator.
 
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Old 02-11-2010, 02:55 PM
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does it get worse if you turn the steering wheel when going slow? any vibrations anywhere?
 
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Old 02-11-2010, 03:12 PM
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I had a weird whining noise, turned out to be the alternator pulley bearings
 
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Old 02-11-2010, 03:15 PM
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No vibrations...doesn't get worse when turning.
 
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Old 02-11-2010, 03:20 PM
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If only at a certain RPM then i would think intake (CAI)
 
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  #9  
Old 02-11-2010, 03:34 PM
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its definitely the bearings on something run by the belt. Prob the idler pulley or tensioner. Take the belt off the truck and spin all the belt wheels see if any make even the slightest noise.
 
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Old 02-11-2010, 04:12 PM
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It could be the belt depending on what shape its in or if its not seated correctly, I would try getting a new belt, cheap thing to check and easy first.
 
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