High load, high rpm whine - tips?

swamp2 · 09-24-2012, 01:00 AM

During a great weekend mountainside flogging I noticed a noise I have not heard before. Warm temps about mid 80s, four adult passengers, full tank of fuel, AC on, 8% grade. Thus at high load and then at high rpm, perhaps in the 6-8k range I noticed a clearly audible, but not loud, dullish squeaking sound. Loosely sounded like it was coming from the dash. My best guess was a belt. I certainly should have experimented with AC off but had to focus on the road! I am hoping someone else has had a similar occurrence and found the cause and fix for it.

impr · 10-07-2012, 04:53 PM

What gears is it occuring in, I had a high pitched whine only in first gear under load high rpms, it turned out my engine mounts were broken. Once they were replaced the whining sound went away.

swamp2 · 10-08-2012, 04:05 PM

I was getting this in 2nd and 3rd (M-DCT). Any idea if the engine mounts are easy to check visually without any disasembly? Thanks.

mhabs · 10-08-2012, 04:12 PM

Do you have an aftermarket pulley?

swamp2 · 10-13-2012, 02:49 AM

^ OEM pulleys. Thanks.

swamp2 · 10-28-2012, 03:45 AM

Bump. No one?

09-24-2012, 01:00 AM	#1
swamp2 Major General Drives: E92 M3 Join Date: Sep 2006 Location: San Diego, CA USA Posts: 8,312 iTrader: (1)	High load, high rpm whine - tips identifying this noise? During a great weekend mountainside flogging I noticed a noise I have not heard before. Warm temps about mid 80s, four adult passengers, full tank of fuel, AC on, 8% grade. Thus at high load and then at high rpm, perhaps in the 6-8k range I noticed a clearly audible, but not loud, dullish squeaking sound. Loosely sounded like it was coming from the dash. My best guess was a belt. I certainly should have experimented with AC off but had to focus on the road! I am hoping someone else has had a similar occurrence and found the cause and fix for it. __________________ E92 M3 \| Space Gray on Fox Red \| M-DCT \| CF Roof \| RAC RG63 Wheels \| Brembo 380mm BBK \| \| Vorsteiner Ti Exhaust \| Matte Black Grilles/Side Gills/Rear Emblem/Mirrors \| \| Alekshop Back up Camera \| GP Thunders \| BMW Aluminum Pedals \| Elite Angels \| \| VentureShield Full Front Wrap \| Hardwired V1 \| Interior Xenon Light Kit \| Last edited by swamp2; 09-26-2012 at 01:33 AM.
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10-08-2012, 04:05 PM	#3
swamp2 Major General Drives: E92 M3 Join Date: Sep 2006 Location: San Diego, CA USA Posts: 8,312 iTrader: (1)	I was getting this in 2nd and 3rd (M-DCT). Any idea if the engine mounts are easy to check visually without any disasembly? Thanks. __________________ E92 M3 \| Space Gray on Fox Red \| M-DCT \| CF Roof \| RAC RG63 Wheels \| Brembo 380mm BBK \| \| Vorsteiner Ti Exhaust \| Matte Black Grilles/Side Gills/Rear Emblem/Mirrors \| \| Alekshop Back up Camera \| GP Thunders \| BMW Aluminum Pedals \| Elite Angels \| \| VentureShield Full Front Wrap \| Hardwired V1 \| Interior Xenon Light Kit \|

10-13-2012, 02:49 AM	#5
swamp2 Major General Drives: E92 M3 Join Date: Sep 2006 Location: San Diego, CA USA Posts: 8,312 iTrader: (1)	^ OEM pulleys. Thanks. __________________ E92 M3 \| Space Gray on Fox Red \| M-DCT \| CF Roof \| RAC RG63 Wheels \| Brembo 380mm BBK \| \| Vorsteiner Ti Exhaust \| Matte Black Grilles/Side Gills/Rear Emblem/Mirrors \| \| Alekshop Back up Camera \| GP Thunders \| BMW Aluminum Pedals \| Elite Angels \| \| VentureShield Full Front Wrap \| Hardwired V1 \| Interior Xenon Light Kit \|

10-28-2012, 03:45 AM	#6
swamp2 Major General Drives: E92 M3 Join Date: Sep 2006 Location: San Diego, CA USA Posts: 8,312 iTrader: (1)	Bump. No one? __________________ E92 M3 \| Space Gray on Fox Red \| M-DCT \| CF Roof \| RAC RG63 Wheels \| Brembo 380mm BBK \| \| Vorsteiner Ti Exhaust \| Matte Black Grilles/Side Gills/Rear Emblem/Mirrors \| \| Alekshop Back up Camera \| GP Thunders \| BMW Aluminum Pedals \| Elite Angels \| \| VentureShield Full Front Wrap \| Hardwired V1 \| Interior Xenon Light Kit \|

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10-07-2012, 04:53 PM	#2
impr New Member Drives: 2009 C63 Join Date: Mar 2012 Location: Vancouver, BC Posts: 13 iTrader: (0)	What gears is it occuring in, I had a high pitched whine only in first gear under load high rpms, it turned out my engine mounts were broken. Once they were replaced the whining sound went away.

10-08-2012, 04:12 PM	#4
mhabs Lieutenant Drives: M3 (E90) Join Date: Feb 2012 Location: San Francisco Posts: 446 iTrader: (0)	Do you have an aftermarket pulley?