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Thread: Engine rattle on 2009 Mazda 5

  1. #1
    Registered Member

    2009 Mazda 5

    Join Date
    Jul 2017

    Thumbs down Engine rattle on 2009 Mazda 5

    Recently had this "rattle" sounds come from my 2009 Mazda 5. The rattle speeds up as the RPMs rise. In the video I revved to 3k RPMs and you can hear it speed up.

    Have also had some AC reliability issues but not sure if it's related.

    Seems to be coming from the back of the engine but can't pinpoint it.

    Any help would be great.

    See vid:

  2. #2
    Registered Member


    Join Date
    Jan 2017
    It seems like generally most engine rattle sounds are due to loose heat sheld on the exhaust. Take the cover off and look at the back of the engine while it's running to see if you can see a heat shield wobbling loose.

    Sent from my iPhone using Tapatalk
    2006 Mazda5 Sport, 130K miles

  3. #3
    Registered Member

    mazda5 GT 2009

    Join Date
    May 2012
    I also have 2009 mazda 5 with 96+k miles that intermittently rattles when accelarating bet. 2-3 rpm. Beyond that the rattle disappears.

    Was it it a heat shield causing the rattle?

  4. #4
    Registered Member

    Mazda 5/2008

    Join Date
    May 2013
    Burlington, Ontario, Canada
    I have the same problem. I keep researching this for 2 years now and the noise still there. I recently change the pulley of the tensioner and the serpentine belt and the small belt due to all my research saying that if you change the tensioner and the belt the noise will be gone. like I said the noise still there no luck.

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