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  1. Help Identifying noise 
    #1
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    I swear I posted this yesterday but I can't find it and it's not in my post history
    2002 A4 3.0 multitronic auto with 90,000 miles on the clock
    See video below for the sound. The louder noise you can hear when the car isn't moving is me putting it in gear so ignore that.

    I have a popping/clunking noise when pulling away from standstill and when slowing to a standstill on braking. It also makes the noise when going over speed bumps and it's coming from the front right. No noise at all once up to speed and it handles and drives as it should.
    I cannot reproduce the sound with the car stationary either by bouncing the front end or with it jacked up and putting a pry bar in various places and giving it some heft.
    Also if i jack the car up and run it with the wheels off the ground it doesn't make the noise
    New CV joints all round
    New upper control arms and no movement in any of the lower arms that I can see (also just passed an MOT)
    New front snub mount and no movement at all from the engine when revving or when I try and rock it so I assume engine mounts are all OK.
    It sounded like inner CV joints to me but I have just replaced with new ones and quality ones rather than cheap and it made no difference

    any help much appreciated as it's driving me crazy



     
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  2. Re: Help Identifying noise 
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    Check you brake pads are not loose in tbe video it looks like it only happens when you brake
    eye for an eye means the whole world goes blind
     
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  3. Re: Help Identifying noise 
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    Thanks I will check but it happens when I accelerate as well
     
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  4. Re: Help Identifying noise 
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    Gearbox mountings??
    A6 2.4 SE (2000)S3 1.8T (2001)80 Coupe 2.3 (1991)
    A3 1.8T sport (1997)A4 3.0 QST (2002)
    80 Coupe 2.6S (1995)A4 Cab 2.4 sport (2002) Another 2.6 '95 coupe in byzanz purple
    '88 type 89 90 saloon kv 5 pot A4 1.8T 2001
     
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  5. Re: Help Identifying noise 
    #5
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    Quote Originally Posted by fourringsrus View Post
    Gearbox mountings??
    I checked these yesterday. I can see the big one at the back of the gearbox and two small ones on either side. Are there any more?
    Anyway they are all fine. In fact all the bushes for the gearbox, engine and sub-frame mounts, aside from a bit of dirt, look like new (they aren't but the car has been dry stored for my entire ownership, which is the last 8 years) and I can get little to no movement out of them with a pry bar.
    The only thing I could find that was shot was the snub mount which Audi appear to have made from chocolate sponge.

    Today I checked the brakes and all was tight there also. I took out the pads and cleaned it all up and re-seated them just to be sure.
     
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  6. Re: Help Identifying noise 
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    Get it on a a four poster ramp try to replicate the noise with someone under having look to see were its coming from
    eye for an eye means the whole world goes blind
     
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  7. Re: Help Identifying noise 
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    Quote Originally Posted by arman123 View Post
    Get it on a a four poster ramp try to replicate the noise with someone under having look to see were its coming from
    My next option will be taking to a garage but I could not replicate the noise with the wheels off the ground, so it's only happening under load so I'm not sure a ramp is going to help.
     
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  8. Re: Help Identifying noise 
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    Listening to the video again and reading your findings again, I am thinking that your noise occurs when either unloading or loading the suspension.
    A broken spring should have noticed on the MOT inspection
    Control arms you say are all good
    Strut top mounts?
    Anti-roll bar mounts/bushes ? ( dont always show on MOT )
    Drop links?
    Certainly seems suspension related to me now.

    Stuart
    A6 2.4 SE (2000)S3 1.8T (2001)80 Coupe 2.3 (1991)
    A3 1.8T sport (1997)A4 3.0 QST (2002)
    80 Coupe 2.6S (1995)A4 Cab 2.4 sport (2002) Another 2.6 '95 coupe in byzanz purple
    '88 type 89 90 saloon kv 5 pot A4 1.8T 2001
     
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  9. Re: Help Identifying noise 
    #9
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    Quote Originally Posted by fourringsrus View Post
    Listening to the video again and reading your findings again, I am thinking that your noise occurs when either unloading or loading the suspension.
    A broken spring should have noticed on the MOT inspection
    Control arms you say are all good
    Strut top mounts?
    Anti-roll bar mounts/bushes ? ( dont always show on MOT )
    Drop links?
    Certainly seems suspension related to me now.

    Stuart
    Thanks for looking.
    Spring looks fine and putting a pry bar in it doesn't produce any noise.
    Top control arms are brand new. Bottom ones all look good with no undue movement.
    Anti roll bar bushes look good and again with little to no movement with a pry bar
    Strut top mounts are difficult to test other than the fact that they don't make any noise on turning from lock to lock which I would expect. Is there a way to test them without taking the whole strut out?
    I don't think it has drop links?? It has links between the anti roll bar and the bottom control arm and they look OK.

    However the fact that it does make the noise going over speed bumps on just the right side does seem to indicate that it might be suspension related. I just can't flipping find anything!
     
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  10. Re: Help Identifying noise 
    #10
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    You say the car has been dry stored for 8 years, does that mean parked up/ unused for 8 years or just that it has always been a garaged car.
    If unused then a lot of bushes could be dried out or perished but not necessarily showing failure.
    A6 2.4 SE (2000)S3 1.8T (2001)80 Coupe 2.3 (1991)
    A3 1.8T sport (1997)A4 3.0 QST (2002)
    80 Coupe 2.6S (1995)A4 Cab 2.4 sport (2002) Another 2.6 '95 coupe in byzanz purple
    '88 type 89 90 saloon kv 5 pot A4 1.8T 2001
     
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