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    afav's Avatar
    afav Posts: 1, Reputation: 1
    New Member
    		  
    #1

    Feb 8, 2010, 08:44 AM
    My corolla 2003 is producing funny noise similar to busted exhaust pipe
    Will make a loud humming noise when accelarating and the noise will go away 35 mph and below.
    TxGreaseMonkey's Avatar
    TxGreaseMonkey Posts: 16,761, Reputation: 5597
    Uber Member
    		  
    #2

    Feb 8, 2010, 08:54 AM

    Is the sound coming from the automatic transmission? Be sure to change the fluid at least as frequently as recommended.

    Have someone race the engine, while you look beneath the car. Then, place car on jack stands and check exhaust connections.
    kitch428's Avatar
    kitch428 Posts: 1,440, Reputation: 152
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    #3

    Feb 8, 2010, 10:04 AM

    The sound you describe sounds to me like the serpentine drive belt tensioner.
    It sounds like a fluttering noise on initial take off and when accelerating. The damper gets weak and you can see oil leakage around it.
    It will need replacing along with a new belt.
    TxGreaseMonkey's Avatar
    TxGreaseMonkey Posts: 16,761, Reputation: 5597
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    #4

    Feb 8, 2010, 10:09 AM

    Good call, k428.
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