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      07-19-2007, 01:55 AM   #1
graham999au
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335i owners - "thump" noise when braking

Anyone getting a thump noise when they brake and again when they accelerate quickly. Seems to be coming from the RHS undercarriage. It's a single "thump" just about when the car is stopped, then if you accelerate quickly it happens again. I've removed everything from the boot.
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      07-19-2007, 03:49 PM   #2
danielt
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no, is it reproducible? i'd get a dealer to check it out
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      07-19-2007, 10:50 PM   #3
solistics
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Nothing on mine. I'd get the dealer to check it out.
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      07-20-2007, 02:27 AM   #4
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I was getting that "thump" noise too but then I realised it was my wife's head hitting the headrest when I was accelerating the dash when braking.

Hmmm…..in your case could it be the brake function (that holds you car still when on a hill) not activating/deactivating properly. Or maybe a suspension noise.

Cheers.
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      07-20-2007, 04:48 AM   #5
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Oh CaptOz, i'm starting to feel sorry for your wife!
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      07-29-2007, 07:15 AM   #6
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Is the car standard, or modified exhaust or suspension?
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      07-29-2007, 05:45 PM   #7
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Oh CaptOz, i'm starting to feel sorry for your wife!
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      07-29-2007, 09:56 PM   #8
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Quote:
Originally Posted by graham999au View Post
Anyone getting a thump noise when they brake and again when they accelerate quickly. Seems to be coming from the RHS undercarriage. It's a single "thump" just about when the car is stopped, then if you accelerate quickly it happens again. I've removed everything from the boot.
pedestrian ??
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      08-07-2007, 08:47 PM   #9
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dealer to re-align the brake calipers. Had it when i changed my brake pads and i didnt put the calipers all the way to straighten the brake lining. result was the brake line pushing the calipers
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      08-07-2007, 10:50 PM   #10
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I heard a strange thump noise from the right hand rear the other day come just as I started to accelerate. Hasn't happened again so I'm not concerned at this stage but it's just as Graham reported. It might not be exclusive to the 335.
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      08-08-2007, 04:58 AM   #11
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Could it possibly be due to the jack not being secured properly? (the e90/2's still come with these don't they?)
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      08-08-2007, 07:28 AM   #12
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Quote:
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pedestrian ??
hehehehehe
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      08-08-2007, 08:36 AM   #13
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Quote:
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Could it possibly be due to the jack not being secured properly? (the e90/2's still come with these don't they?)
there's no jack for me, i think they got rid of them in favour of runflats
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      08-08-2007, 06:09 PM   #14
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Deffinitly no jack in the E9x cars now.
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