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Thread: Strange sound when starting up.

  1. #1
    Member
    Join Date:  Feb 2013

    Posts:    39

    Strange sound when starting up.

    Any ideas what this honk sound is? I hear it occasionally on cold starts.
    Thanks
    https://youtu.be/3jA4UmaXnMo

  2. #2
    Banned Michael's Avatar
    Join Date:  May 2011

    Posts:    3,811

    Make sure the compressor is not engaged so you can rule that out.

    I'm hearing a knocking noise and/or grinding. Possibly starter gear not disengaging or a bolt backed out of flywheel barely hitting engine block.
    Last edited by Michael; 10-19-2019 at 05:05 PM.

  3. #3
    Senior Member Bitsyncmaster's Avatar
    Join Date:  May 2011

    Location:  Leonardtown, MD

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    My VIN:    03572

    If it's repeatable, you can try unplugging the idle ECU and or the FV and see if it stops. Do you step on the gas to start it? Does it do it with a cold and hot engine?
    Dave M vin 03572
    http://dm-eng.weebly.com/

  4. #4
    Senior Member DMC-81's Avatar
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    Quote Originally Posted by Michael View Post
    Make sure the compressor is not engaged so you can rule that out.

    I'm hearing a knocking noise and/or grinding. Possibly starter gear not disengaging or a bolt backed out of flywheel barely hitting engine block.
    +1
    Dana

    1981 DeLorean DMC-12 (5 Speed, Gas Flap, Black Interior, Windshield Antenna, Dark Gray)
    Restored as "mostly correct, but with flaws corrected". Pictures and comments of my restoration are in the albums section on my profile.
    2006 Dodge Magnum R/T (D/D)
    2010 Camaro SS (Transformers Edition)

  5. #5
    Member Giamanut's Avatar
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    Quote Originally Posted by Michael View Post
    Make sure the compressor is not engaged so you can rule that out.

    I'm hearing a knocking noise and/or grinding. Possibly starter gear not disengaging or a bolt backed out of flywheel barely hitting engine block.
    +2 all day long. bad tooth on starter so it bangs flywheel then grinds. Just my opinion.

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