2nd Gen JCW Weird sound coming from the car.

Discussion in '2nd Generation: 2007+ R55 through R61' started by haliphics, May 17, 2017.

  1. Guest - Welcome to the new Motoring Alliance Site! Steve, MCS02 and I were up until the early hours this morning working to get it done... as you can see it took us a bit longer than expected to get Phase 1 up and running. We are not 100% there.. its a journey. For site updates, "How Do I" and feedback please use the Announcements, How Do I, Feedback Forum (Links below). Like building a car.... its never done... and thanks for your patience

    Site Announcements "How Do I" Feedback
  1. haliphics

    haliphics New Member

    Dec 30, 2016
    61
    0
    0
    So the other day I noticed a sound coming from somewhere in the car. It sounds like under the car but my friend also said it sounds like the around the engine. It only happens around 1400-2100 rpms in every gear. But it only happys when I let up around that or sometime around when I shift at 4k. It makes a "Tsssst" sound. Sometimes long and other really short. I put a video for reference. I just recently put in thr alta air intake and a OBX Catless Down Pipe and deletes the resonator. And only started to happen after the downpipe and resornator delete.

    https://youtu.be/slRwd2Bdk6M

    Sent from my LG-H830 using Tapatalk
     
  2. Minidave

    Minidave Well-Known Member
    Lifetime Supporter

    Dec 22, 2009
    4,449
    1,635
    113
    Overland Park, Ks
    Sounds like a heat shield rattle to me, get the car up in the air and bump the exhaust with a rubber mallet till you can locate the source of the sound.
     
  3. Zapski

    Zapski Well-Known Member

    May 4, 2011
    1,973
    796
    113
    Columbus, OH
    Not sure myself. I have the Alta intake and a Miltek exhaust, but I did have a heat shield rattle that was pretty easily taken care of before the two of those mods happened.

    I will say that the Alta intake does make for a much louder whoosh and blow off when under load, though you'll have to be lugging the engine a bit to hear it. I did also get a GFB diverter valve which reduced that somewhat.

    I'm not sure that's what I'm hearing though, so look at the heat shield first.
     
  4. caseydog

    caseydog Well-Known Member

    Nov 7, 2012
    2,072
    262
    83
    Automotive Photographer
    Dallas
    It is hard to tell from that clip, but to me, it sounds like the diverter valve releasing pressure. That would be a normal sound. Without actually standing next to the car, that's the best response I can give.

    CD
     
  5. MCS02

    MCS02 Moderator
    Staff Member Premium Supporter

    Jul 31, 2009
    7,342
    3,996
    113
    I can't tell.
     

Share This Page