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  1. #1
    Registered Member
    Port Saint Lucie, FL, United States
    Member No: 50889 RichRocky is an unknown quantity at this point RichRocky's Avatar
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    Sep 2002
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    2003 745Li with knock at idle

    I have a 2003 BMW 745li. It runs great but has a engine knock at idle. has anyone fixed this problem? i saw an article about a converter being bad.



  2. #2
    Geez Tech
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    Loud like a rod knock?

    If so it may be the alternator.
    Remove the alternator belt and test run the engine at idle, DO NOT DRIVE THE CAR, if the noise is gone then the alternator may be the culprit.

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