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What's that rumble sound?!?? :/

Discussion in 'Audi S4/A4/A4 Cab (B7 Chassis)' started by supanova, Mar 13, 2013.

  1. supanova
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    supanova A3 2.0 TDI SE

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    [Mar 13, 2013]
    [​IMG]

    Heard a rumble sound when driving off and slowing down or going slow ie about 10-15 mph in the photo, a) is this the rubber bushing and b) should this have movement or should it stay solid and not move.


    Cheers
    #1
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  3. RMH1A4cab
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    RMH1A4cab I'm in Cruise control

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    [Mar 13, 2013]
    Looks like a bottom arm bush.

    It shouldn't have any play in it but it will move if forced as it's rubber, don't change just one do both sides if it is worn

    You can upgrade to polyurethane.
    #2
  4. supanova
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    supanova A3 2.0 TDI SE

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    [Mar 14, 2013]
    would this make the rumbling sound or am I lookin in the wrong direction altogether?
    #3
  5. adamss24
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    adamss24 Well-Known Member

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    [Mar 14, 2013]
    That won't rumble mate, is your's a quattro ?
    #4
  6. supanova
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    supanova A3 2.0 TDI SE

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    [Mar 14, 2013]
    Nope just b7 a4 avant 2.0l Tdi se.
    #5
  7. RMH1A4cab
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    RMH1A4cab I'm in Cruise control

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    [Mar 14, 2013]
    That's bottom bush would make a knocking sound and the steering would feel a bit disconnected if it was badly warn.

    So is this noise still there if you put the car into nuteral and free wheel, this is to check is its drive train related.

    Are your tires Ok, my previous car an S2000 used to make and awful sound where there tires were worn/going off.

    Jack the up and put your foot against the bottom of the wheel and pull the top of the wheel towards you see if there is any play.
    #6
  8. scotty76
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    scotty76 Well-Known Member

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    [Mar 14, 2013]
    That was my thought too. Our VW Jetta does this when the rear tyres are worn. Had it on previous cars too.
    #7
  9. supanova
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    supanova A3 2.0 TDI SE

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    [Mar 15, 2013]
    No it's not the tyres for definite!! I sounds more like a metal rattle, like something is loose or worn.
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  10. supanova
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    supanova A3 2.0 TDI SE

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    [Apr 1, 2013]
    no ideas guys?
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  11. Avnt
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    Avnt Active Member

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    [Apr 1, 2013]
    Wheel bearing
    #10
  12. supanova
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    supanova A3 2.0 TDI SE

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    [Apr 1, 2013]
    Umm not too sure. is sounds like metal rumbling together like something is loose. I replace a wheel bearing on the drivers side last month. could it be anything else?
    #11
  13. Molnboman
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    Molnboman Well-Known Member

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    [Apr 1, 2013]
    Does the rumble / noise go away when you turn the steering wheel?

    A
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  14. Avnt
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    Avnt Active Member

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    [Apr 1, 2013]
    Brakepad fouling on the disc. That gave me a rumbling sound
    #13
  15. supanova
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    supanova A3 2.0 TDI SE

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    [Apr 1, 2013]
    The rumble only happens when im coasting/slowing down, coming to a stop or taking off slowly. like a jingle rattle as if something needs tightened. :/
    #14
  16. Molnboman
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    Molnboman Well-Known Member

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    [Apr 1, 2013]
    Disnae sound like a bearing from my experience then. Could be something between your pads and disc ( gravel, gunk etc ) I have always been very reluctant to do this, however, I was recommended by my garage to give the brake/ discs a good, careful "blootering" with a pressure washer ever now and again on my Avant.

    Good Luck and keep us posted

    A
    Last edited: Apr 2, 2013
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  17. supanova
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    supanova A3 2.0 TDI SE

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    [Apr 1, 2013]
    I always thought that a wheel bearing gave off a humming sound? Although I'm not very technical when it comes to cars mind you. the brakes do feel like they could be doing with a new set. ( a bit of travel when braking ). and the disc do look a bit worse for wear. If i jack the car up and push/pull the wheel to see if there is any play/movement, will this determine if its the wheel bearing?
    #16
  18. Avnt
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    Avnt Active Member

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    [Apr 2, 2013]
    Ye youd feel movement. If ur due some brakes its a good chance that is it. It did on my volvo at the rear but it sit it all the time. Changed disc and pads nice and quiet now apart from the drop links knocking their tits off lol
    #17
  19. Steve220
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    Steve220 Member

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    [Apr 2, 2013]
    Wheel bearings can make a droning sound or a rumbling sound depending on how far they are gone. If it makes it more when steering one direction then it will be side dependant. Brakes will only make a rumbling sound if you have no pads left.
    #18

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