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    leeadaman's Avatar
    leeadaman Posts: 1, Reputation: 1
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    #1

    Sep 18, 2006, 02:49 PM
    Lound noise in pickup
    I have a 2000 f-150 5.4 liter v8 and for the last month it has been making a loud noise like it has no muffler on it. This only happens when I am in drive and for about the 1st 30 seconds of it driving. It doesn't happen if I rev the engine in neutral. And it goes away and sounds all normal and performs normaly. Could anyone tell me what this could be?

    Lee
    Blast's Avatar
    Blast Posts: 3, Reputation: 1
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    #2

    Oct 13, 2006, 08:23 PM
    You could possibly have exhaust manifold leak. The noise goes away after it warms up and the metal expands enough to seal it possibly.
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