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Old 06-18-2014, 07:30 AM   #1
tuanle16
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Join Date: Jan 2008
Location: atl
Posts: 363
rough noise from engine

can anyone help with a diagnosis? occasionally, as i am in 3 or 4 gear...as i let off the gas, there is a loud hum or growl from the engine compartment. it typically only happens when the rpm is about 3000. it will go away if i press on the gas or clutch again. but it is annoying. it only happens when i am driving and let off the gas. it sounds similar to driving on a very rough road.

thoughts?
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