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Go Back   Bimmerfest - BMW Forums > BMW Model Discussions > 5 Series > E39 (1997 - 2003)

E39 (1997 - 2003)
The BMW 5-Series (E39 chassis) was introduced in the United States as a 1997 model year car and lasted until the 2004 when the E60 chassis was released. The United States saw several variations including the 525i, 528i, 530i and 540i. -- View the E39 Wiki

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  #1  
Old 04-13-2017, 07:53 PM
Arod540 Arod540 is offline
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Location: California
 
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Mein Auto: 540i
Loud vibration from under brake pedal

Hello all, I have an 03 540A, and I've noticed a loud noise and vibration coming from under the car I only feel it at a stop, sometimes it's quiet but other times its an intermittent fan type of noise, like if a fan was vibrating under my feet. Not sure what it is.
Thanks for any help
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  #2  
Old 04-14-2017, 03:38 PM
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Brandon002 Brandon002 is offline
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Mein Auto: 2002 530I Sport
Does the pedal vibrate? Youre going to have to get a little more detailed.

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  #3  
Old 04-15-2017, 07:27 AM
Sroor9001 Sroor9001 is offline
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Location: Bahrain
 
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Mein Auto: Bmw 525i 2002
Looks like wrapped rotors if it's vibrating pedal on braking
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  #4  
Old 04-15-2017, 08:44 AM
pshovest pshovest is online now
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Mein Auto: '10 535i '08 X5 '00 528i
They must be REALLY warped to vibrate at a stop.
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Old 04-15-2017, 10:27 PM
Sroor9001 Sroor9001 is offline
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Location: Bahrain
 
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Mein Auto: Bmw 525i 2002
If it's under your transmission gear or console it's your bearing of the drive shaft
But on stop while you ate driving then stop only wrapper rotor
Nothing else coming to my mind
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Old 04-16-2017, 05:16 AM
pshovest pshovest is online now
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Mein Auto: '10 535i '08 X5 '00 528i
Does is make the noise if you shift into neutral at ~15MPH while braking to a complete stop?
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  #7  
Old 04-16-2017, 06:36 AM
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Brandon002 Brandon002 is offline
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Are you sure its not an issue causing the ABS pump to activate? That would cause vibration in the pedal. A warped rotor usually feels like a pulse in the pedal, not a vibration.

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  #8  
Old 04-17-2017, 11:16 PM
Arod540 Arod540 is offline
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Ok so the sound quiets down in neutral, but I notice it changes and quiets down if I turn the steering wheel a certain way.
No vibration in pedal , just feels like sound is coming from under my feet.

Last edited by Arod540; 04-17-2017 at 11:18 PM.
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  #9  
Old 04-18-2017, 06:30 AM
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mattmar1 mattmar1 is offline
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have the motor/trans mounts checked
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99 528i 5sp sport
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  #10  
Old 04-18-2017, 06:45 AM
Reynoso_rns Reynoso_rns is offline
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Does it happens at a certain speed? Or it starts up vibrating?


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  #11  
Old 04-18-2017, 09:37 AM
Arod540 Arod540 is offline
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No just at idle
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  #12  
Old 04-19-2017, 12:33 PM
Sroor9001 Sroor9001 is offline
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So check engine mounts
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  #13  
Old 04-20-2017, 06:51 PM
arthurwood arthurwood is offline
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Hard to tell from your description but if it is violetnt and only when coming to a slow stop on bumps I had this and found a good thread where the test is so simple that I don't want you to come back to this thread until after you have run the test I propose.

First locate somewhere bumpy that you can test this out on and so that you can reproduce the shaking on stopping every time or at least almost every time.

If you can't reliably reproduced the problem then stop until you can because moving forward makes no sense.

Once you can reliably reproduces the problem then just turn the engine off and disconnect your abs harness from the abs computer.

Start the engine and now try to reproduce the shakes.
If it ios what I had then you will only have the shakes when the abs harness is connected.

For me it's 100 percent only happens when the ABS is connected then you have that problem.

Do realize that I know you know that it's not the abs that most people think of when they jam on the breaks which we all know what it feels like. This is a different shake than that.
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