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09 Ram "Whooshing" sound under hood when MDS kicks off

12-29-2011, 11:54 AM
09 Ram 1500 5.7L 4X4 ,, Need help, every time MDS (fuel saver mode) kicks off at 45mph plus, there is a like an intermittent 'whooshing' sound coming from under the hood. Any ideas where to start??

12-30-2011, 06:58 PM
Rlbryant, could this be fan noise maybe?

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