High load, high rpm whine

swamp2 · 09-24-2012, 01:29 PM

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/whining sound. It was not high pitched, more lower in pitch. 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.

swamp2 · 10-04-2012, 01:07 AM

Bump, anyone?

09-24-2012, 01:29 PM	#1
swamp2 Lieutenant General 609 Rep 10,407 Posts Drives: E92 M3 Join Date: Sep 2006 Location: San Diego, CA USA iTrader: (3)	High load, high rpm whine - tips identifying the 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/whining sound. It was not high pitched, more lower in pitch. 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 \| \| XPEL Full Front Wrap \| Hardwired V1 \| Interior Xenon Light Kit \| Last edited by swamp2; 09-26-2012 at 01:31 AM..
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10-04-2012, 01:07 AM	#2
swamp2 Lieutenant General 609 Rep 10,407 Posts Drives: E92 M3 Join Date: Sep 2006 Location: San Diego, CA USA iTrader: (3)	Bump, anyone? __________________ 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 \| \| XPEL Full Front Wrap \| Hardwired V1 \| Interior Xenon Light Kit \|
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