Banging sound coming under the car.

Discussion in 'Renegade Stock Tech' started by Ke70_styl, May 13, 2018.

  1. Ke70_styl

    Ke70_styl New Member

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    Hey guys and girls,

    In the last few days I am experiencing a "banging" sound coming under the floor after bumps or road imperfections. It sounds like the exhaust hitting something and I can also feel it in my feet through the floor.

    I looked under the car and the exhaust seems to be fine but I believe that the rubber bands holding the exhaust have become soft. Also a large part of the exhaust has no support.

    Anyone with the same problem? Is my assumption correct?
     
  2. Gerald Lajiness

    Gerald Lajiness New Member

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    Check to see if your sway bar end links are tight
     
  3. Ke70_styl

    Ke70_styl New Member

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    Thank for the reply. I will check tomorrow but I don't believe it comes from the sway bar. I will keep you posted. :)
     
  4. Gerald Lajiness

    Gerald Lajiness New Member

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    It may not be, I only say this because I had a similar sound and the bottom nut on one of my sway bar links was about a half turn loose. After tightening the sound went away.
     
  5. Ke70_styl

    Ke70_styl New Member

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    Let's hope it's that. Sounds like an easy fix and inexpensive fix.
     
  6. Ke70_styl

    Ke70_styl New Member

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    I checked the sway bar links and all seem torqued to spec. Also after some observation I came to the conclusion that the noise only happens when the car is "hot". I believe that the rubber mounts become spongie with heat and the exhaust hits the crossmember.
     
  7. Gerald Lajiness

    Gerald Lajiness New Member

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    A way you can check that is get it hot and get a good pair of gloves and see if you can recreate the sound by moving the exhaust around.
     
  8. dapperagent

    dapperagent New Member

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    Interesting you say it's a heat issue. I think I have experienced the knocking sound you are describing but it only happens on cold days during winter when the car is still warming up...
     
  9. Ke70_styl

    Ke70_styl New Member

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    I tried that and I wasn't able to do it. At least I didn't hear it from outside the car. I will get a friend do that and listen from the inside
     
  10. Ke70_styl

    Ke70_styl New Member

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    Hmmmm strange. Completely different behavior.
     

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