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Thread: knocking noise on startup

  1. #1
    Ride
    VN Commodore wagon

    Join Date
    Sep 2006
    Location
    st. mary's tasmania
    Posts
    10

    Default knocking noise on startup

    hey can anyone help i have this knocking noise from bellhousing area on startup and in drive underload not there all the time and car still drives ?
    any ideas or has anyone had similar problem ...oh yeah replaced flexplate less than six months ago ..have had a few gear slips and failure to change back up when after mountain driving.....

  2. #2
    Ride
    '92 HSV VP GTS

    Join Date
    Apr 2005
    Location
    SE Queensland
    Posts
    2,069

  3. #3
    Ride
    VN Commodore wagon

    Join Date
    Sep 2006
    Location
    st. mary's tasmania
    Posts
    10

  4. #4
    Ride
    VX 'S' S1

    Join Date
    Apr 2005
    Location
    South East,Victoria
    Posts
    1,357

    Default

    Are you sure it is coming from the bellhousing ? I had a similar prob with my old VN on start up and found it to be the harmonic balancer
    there are three types of people in the world , those who can count and those who can't

  5. #5
    Ride
    VN Commodore wagon

    Join Date
    Sep 2006
    Location
    st. mary's tasmania
    Posts
    10

    Default

    yeah hi back again... what are the symptoms of a stuffed harmonic balancer ..is the noise there in all gears including neutral...sounds major on cold start to frightened to drive anywhere for an opinion Help please

  6. #6
    Ride
    VN Commodore wagon

    Join Date
    Sep 2006
    Location
    st. mary's tasmania
    Posts
    10

    Default

    oh yeah should there be any in / out movement when you apply a screwdriver behind..it sounds like it is comong out behind the airconditioner and or the bell housing ...took starter off and all seems to be still bolted on there help please


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