Help -- Sliding Noise Cannot Find The Source

mbplace · 04-16-2013, 07:05 PM

There is a horrible sliding noise that goes back and forth when i accelerate/decelerate... I cannot find the source. It doesnt go left to right and only fron to back. Anyone else have this problem or have a good idea as to where i can find the source??

The dealership is trying to charge 150 to just diagnose the noise (which didnt come about until i had them service the car and change the oil). No telling how much they would over charge to remove the noise.

any ideas would be greatly appreciated!

L4ces · 04-16-2013, 07:19 PM

Does it sound like water?
I have water in my side skirts that doesn't seem to drain. I took it to the dealer once and had it drained but now it's back.

During freezing winter it turned into ice and slid once I started off but the noise didn't occur as I started from stop lights.

mbplace · 04-16-2013, 07:24 PM

no not quite like water. it sounds like something flat (like a coin) sliding forwards and backwards... not like a rock or golf ball rolling arround

FVM3 · 04-16-2013, 07:27 PM

hanger of the exhaust?

mbplace · 04-16-2013, 07:30 PM

Quote:

Originally Posted by christopherchenm

hanger of the exhaust?

it sounds like it is directly under the drivers seat... what do you mean by hanger of the exhaust?

1MOREMOD · 04-16-2013, 07:33 PM

the exhaust uses metal hangars pushed into rubber mounts to support itself.

FVM3 · 04-16-2013, 07:49 PM

maybe the cats/resonators literally touches the car for some reason?

baba louey · 04-16-2013, 08:03 PM

Your description of a coin sliding back and forth is quite good. It wouldn't surprise me if a technician left something behind after working on your car. My car is too new for me to get any any experience working underneath it. As for my previous cars, I've left several thing behind that made weird sounds. After investigating, I've usually found the culprit (wrench,washer,nut,bolt,etc).

MilehighM3 · 04-16-2013, 08:07 PM

Get a flashlight and look under the seat inside the floor vent. All kinds of small objects slide in there and have to be fished out. It's practically a guarantee that something is in there. Let us know what you find!

mbplace · 04-17-2013, 12:49 PM

Quote:

Originally Posted by Bmw135er

Get a flashlight and look under the seat inside the floor vent. All kinds of small objects slide in there and have to be fished out. It's practically a guarantee that something is in there. Let us know what you find!

man you're my hero. just saw your post and thought id take a look while i was at work and there it is... like $5 in quarters and nickels in my floor vent. I will snake them out when i get home and give you the exact amount but surely that is the cause of this horrendous sliding noise!

Beats the $150 BMW was trying to charge me... this way im actually making a little money, right?

mosx · 04-17-2013, 01:07 PM

Quote:

Originally Posted by mbplace

man you're my hero. just saw your post and thought id take a look while i was at work and there it is... like $5 in quarters and nickels in my floor vent. I will snake them out when i get home and give you the exact amount but surely that is the cause of this horrendous sliding noise!

Beats the $150 BMW was trying to charge me... this way im actually making a little money, right?

This may be the first and last time you get paid for fixing a problem with your own car!

mbplace · 04-17-2013, 09:15 PM

Quote:

Originally Posted by mosx

This may be the first and last time you get paid for fixing a problem with your own car!

sure enough.... 33 cents later and no more noise. thanks again!

MilehighM3 · 04-17-2013, 09:19 PM

Quote:

Originally Posted by mbplace

sure enough.... 33 cents later and no more noise. thanks again!

Glad to help! Been there and done that!

1MOREMOD · 04-17-2013, 09:24 PM

nice work bryan.

trentagxw · 04-17-2013, 09:32 PM

I took it to the dealer once and had it drained but now it's back.

GregW / Oregon · 04-17-2013, 09:52 PM

Quote:

Originally Posted by Bmw135er

Get a flashlight and look under the seat inside the floor vent. All kinds of small objects slide in there and have to be fished out. It's practically a guarantee that something is in there. Let us know what you find!

Exactly what I was going to suggest - I've had stuff in those vents in both my M3 and Mercedes. Need to put screening over them.

signes · 04-18-2013, 10:36 AM

Same here, always get a coin in the floor vent that goes to the back seats. One other area to look out for is the thigh bolsters. Coins can get under the leather then slide around in the tray underneath. Complete PITA to get them out.

llis · 04-18-2013, 02:52 PM

My previous M had a washer or something loose in the door, sliding back and forth like you describe. Dealer found it and removed it. No charge.

///M3THOD · 04-18-2013, 02:55 PM

Quote:

Originally Posted by mbplace

man you're my hero. just saw your post and thought id take a look while i was at work and there it is... like $5 in quarters and nickels in my floor vent. I will snake them out when i get home and give you the exact amount but surely that is the cause of this horrendous sliding noise!

Beats the $150 BMW was trying to charge me... this way im actually making a little money, right?

Your a dollar menunaire

bradyb23 · 01-26-2016, 12:25 PM

Hello all. I think I have this problem but was hoping someone who's experienced this could confirm by listening to this video:

. The dealer is completely stumped (I had some work done on the roof, and the sound started right after that; from the drivers seat, it sounds to me like it's coming from the roof liner but to the mechanic it sounded like it was coming from the steering column (which he uncovered, with no luck). So now, after reading this thread, I'm thinking perhaps it's a screw in the under-seat vent and the sound is just carrying. In any event, if someone who's had this problem could take a listen and let me know if this sounds right, I'd greatly appreciate it!

GregW / Oregon · 01-27-2016, 01:24 PM

Quote:

Originally Posted by bradyb23

Hello all. I think I have this problem but was hoping someone who's experienced this could confirm by listening to this video: . The dealer is completely stumped (I had some work done on the roof, and the sound started right after that; from the drivers seat, it sounds to me like it's coming from the roof liner but to the mechanic it sounded like it was coming from the steering column (which he uncovered, with no luck). So now, after reading this thread, I'm thinking perhaps it's a screw in the under-seat vent and the sound is just carrying. In any event, if someone who's had this problem could take a listen and let me know if this sounds right, I'd greatly appreciate it!

I'd put good money that it is a screw or something rolling around in one of the underseat air ducts. I has a pen down there at one time and it was confounding. Try putting a flexible magnet into the ducts and see if you can pull something out. If it's not magnetic, like a coin, you may need to use a vacuum with a slim attachment. Good luck!

Umi|all|day · 03-25-2016, 03:58 AM

Quote:

Originally Posted by mbplace

There is a horrible sliding noise that goes back and forth when i accelerate/decelerate... I cannot find the source. It doesnt go left to right and only fron to back. Anyone else have this problem or have a good idea as to where i can find the source??

The dealership is trying to charge 150 to just diagnose the noise (which didnt come about until i had them service the car and change the oil). No telling how much they would over charge to remove the noise.

any ideas would be greatly appreciated!

Maybe something stuck in your heat shields?

04-16-2013, 07:05 PM	#1
mbplace Bama Beamer 5 Rep 19 Posts Drives: 2008 BMW M3 Sedan Join Date: Jan 2012 Location: Mountain Brook, AL iTrader: (0)	Help -- Sliding Noise Cannot Find The Source There is a horrible sliding noise that goes back and forth when i accelerate/decelerate... I cannot find the source. It doesnt go left to right and only fron to back. Anyone else have this problem or have a good idea as to where i can find the source?? The dealership is trying to charge 150 to just diagnose the noise (which didnt come about until i had them service the car and change the oil). No telling how much they would over charge to remove the noise. any ideas would be greatly appreciated! __________________ Marcus '08 Metallic Graphite BMW M3 E90
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04-16-2013, 07:19 PM	#2
L4ces Major 337 Rep 1,489 Posts Drives: 2008 E92 M3 Alpine White Join Date: Aug 2010 Location: NJ - NY iTrader: (0) Garage List 2008 M3 [0.00]	Does it sound like water? I have water in my side skirts that doesn't seem to drain. I took it to the dealer once and had it drained but now it's back. During freezing winter it turned into ice and slid once I started off but the noise didn't occur as I started from stop lights.
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04-16-2013, 07:24 PM	#3
mbplace Bama Beamer 5 Rep 19 Posts Drives: 2008 BMW M3 Sedan Join Date: Jan 2012 Location: Mountain Brook, AL iTrader: (0)	no not quite like water. it sounds like something flat (like a coin) sliding forwards and backwards... not like a rock or golf ball rolling arround __________________ Marcus '08 Metallic Graphite BMW M3 E90
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04-16-2013, 07:27 PM	#4
FVM3 Major General 273 Rep 5,751 Posts Drives: e92 m3, f30 328i Join Date: Sep 2010 Location: Los Angeles iTrader: (2)	hanger of the exhaust?
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04-16-2013, 07:33 PM	#6
1MOREMOD - 11817 Rep 23,187 Posts Drives: Race car-> Join Date: Mar 2009 Location: check your mirrors iTrader: (5)	the exhaust uses metal hangars pushed into rubber mounts to support itself. __________________ 02 Tiag e46 M3\|6MT\|GC plates\|MCS c.o.\|GC bars\|GC race control arms\|GC bushings\|BW eng. & tran. mounts\|subframe kit\|BW race shifter\|BW Jaffster\|Euro header\|BW exhaust\|K&N c.a.i.\|Epic race tune\|Rouge pulleys\|Seibon CF hood\|CSL bumper\|apr gt 250 & splitter\|ST-40\|XR-2\|SS lines\|half cage\|Recaro profi\|Profi 2 harness\|BMWpedals\|BW studs\|
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04-16-2013, 07:49 PM	#7
FVM3 Major General 273 Rep 5,751 Posts Drives: e92 m3, f30 328i Join Date: Sep 2010 Location: Los Angeles iTrader: (2)	maybe the cats/resonators literally touches the car for some reason?
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04-16-2013, 08:03 PM	#8
baba louey First Lieutenant 64 Rep 303 Posts Drives: 2012 M3 6sp ZCP Mel red coupe Join Date: Aug 2012 Location: calgary iTrader: (0)	Your description of a coin sliding back and forth is quite good. It wouldn't surprise me if a technician left something behind after working on your car. My car is too new for me to get any any experience working underneath it. As for my previous cars, I've left several thing behind that made weird sounds. After investigating, I've usually found the culprit (wrench,washer,nut,bolt,etc).
	Appreciate 0 Quote

04-16-2013, 08:07 PM	#9
MilehighM3 Brigadier General 915 Rep 3,456 Posts Drives: Harrop E90 M3 Join Date: May 2011 Location: Colorado Springs iTrader: (14) Garage List 2009 E90 M3 [6.50]	Get a flashlight and look under the seat inside the floor vent. All kinds of small objects slide in there and have to be fished out. It's practically a guarantee that something is in there. Let us know what you find!
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04-17-2013, 09:24 PM	#14
1MOREMOD - 11817 Rep 23,187 Posts Drives: Race car-> Join Date: Mar 2009 Location: check your mirrors iTrader: (5)	nice work bryan. __________________ 02 Tiag e46 M3\|6MT\|GC plates\|MCS c.o.\|GC bars\|GC race control arms\|GC bushings\|BW eng. & tran. mounts\|subframe kit\|BW race shifter\|BW Jaffster\|Euro header\|BW exhaust\|K&N c.a.i.\|Epic race tune\|Rouge pulleys\|Seibon CF hood\|CSL bumper\|apr gt 250 & splitter\|ST-40\|XR-2\|SS lines\|half cage\|Recaro profi\|Profi 2 harness\|BMWpedals\|BW studs\|
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04-17-2013, 09:32 PM	#15
trentagxw New Member 0 Rep 6 Posts Drives: audi Join Date: Apr 2013 Location: fou iTrader: (0)	I took it to the dealer once and had it drained but now it's back. __________________
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04-18-2013, 10:36 AM	#17
signes Brigadier General 199 Rep 4,318 Posts Drives: 991 GT3 RS Join Date: Sep 2008 Location: Living at (almost...) 9k iTrader: (5)	Same here, always get a coin in the floor vent that goes to the back seats. One other area to look out for is the thigh bolsters. Coins can get under the leather then slide around in the tray underneath. Complete PITA to get them out. __________________ GT3 RS \| Desperately seeking the next great M car...
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04-18-2013, 02:52 PM	#18
llis octane chick 79 Rep 1,187 Posts Drives: ex-M Join Date: Oct 2010 Location: Colorado iTrader: (1) Garage List 2013 BMW M3 ZCP [10.00] 2003 BMW M5 [0.00]	My previous M had a washer or something loose in the door, sliding back and forth like you describe. Dealer found it and removed it. No charge.
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01-26-2016, 12:25 PM	#20
bradyb23 Registered 0 Rep 2 Posts Drives: 2011 Black on Black E93 Join Date: Jan 2016 Location: Santa Barbara CA iTrader: (0)	Hello all. I think I have this problem but was hoping someone who's experienced this could confirm by listening to this video: . The dealer is completely stumped (I had some work done on the roof, and the sound started right after that; from the drivers seat, it sounds to me like it's coming from the roof liner but to the mechanic it sounded like it was coming from the steering column (which he uncovered, with no luck). So now, after reading this thread, I'm thinking perhaps it's a screw in the under-seat vent and the sound is just carrying. In any event, if someone who's had this problem could take a listen and let me know if this sounds right, I'd greatly appreciate it!
	Appreciate 0 Quote