Whirring noise

Colinoscopy · 04-17-2018, 02:02 AM

Hey guys,

I have a strange whirring/whistling noise (not my turbos lol) upon acceleration. It sounds like it's coming from the right rear side of my car. I believe I can only hear it when I'm sitting inside the cabin. It sounds similar to alternator whine, or as if there's wind leaking in from somewhere creating a whistling noise. The pitch increases as I increase throttle.

Any ideas here? Some people have suggested AC, but I never use that in my current climate. HPFP issues? Thanks.

Toome · 04-17-2018, 10:42 AM

Quote:

Originally Posted by Colinoscopy

Hey guys,

I have a strange whirring/whistling noise (not my turbos lol) upon acceleration. It sounds like it's coming from the right rear side of my car. I believe I can only hear it when I'm sitting inside the cabin. It sounds similar to alternator whine, or as if there's wind leaking in from somewhere creating a whistling noise. The pitch increases as I increase throttle.

Any ideas here? Some people have suggested AC, but I never use that in my current climate. HPFP issues? Thanks.

maybe you have a boost leak?

ShocknAwe · 04-17-2018, 11:31 AM

LPFP is under right rear seat.

Colinoscopy · 04-17-2018, 08:43 PM

Quote:

Originally Posted by ShocknAwe

LPFP is under right rear seat.

Sounds about right. Does it usually make noises when its about to fail?

ShocknAwe · 04-18-2018, 12:09 PM

Mine didn't change noises, was always loud. If you can log, check your FP_L pressures. Should stay above 50psi at full load. For reference, my healthy stg2 pump sits at 65-70 psi during a pull.

Colinoscopy · 04-19-2018, 04:13 PM

Quote:

Originally Posted by ShocknAwe

Mine didn't change noises, was always loud. If you can log, check your FP_L pressures. Should stay above 50psi at full load. For reference, my healthy stg2 pump sits at 65-70 psi during a pull.

Thanks, I'll try that. Is there a good way to log other than MHD or should I just buy the monitoring system?

ShocknAwe · 04-19-2018, 05:59 PM

Quote:

Originally Posted by Colinoscopy

Thanks, I'll try that. Is there a good way to log other than MHD or should I just buy the monitoring system?

If you already have MHD you should buy the logging module.

04-17-2018, 02:02 AM	#1
Colinoscopy Private 18 Rep 89 Posts Drives: 2010 135i ///M Package Join Date: Feb 2018 Location: Portland, Oregon iTrader: (0)	Whirring noise Hey guys, I have a strange whirring/whistling noise (not my turbos lol) upon acceleration. It sounds like it's coming from the right rear side of my car. I believe I can only hear it when I'm sitting inside the cabin. It sounds similar to alternator whine, or as if there's wind leaking in from somewhere creating a whistling noise. The pitch increases as I increase throttle. Any ideas here? Some people have suggested AC, but I never use that in my current climate. HPFP issues? Thanks.
	Appreciate 0 Tweet Quote

04-17-2018, 11:31 AM	#3
ShocknAwe 1Addict 5380 Rep 9,253 Posts Drives: N54 E82, M57 E70, 964 C4 Join Date: Jul 2012 Location: Charleston iTrader: (22)	LPFP is under right rear seat. __________________ 2010 E82 1 Series M Clone Hydra Performance augmented OEM+
	Appreciate 0 Quote

04-18-2018, 12:09 PM	#5
ShocknAwe 1Addict 5380 Rep 9,253 Posts Drives: N54 E82, M57 E70, 964 C4 Join Date: Jul 2012 Location: Charleston iTrader: (22)	Mine didn't change noises, was always loud. If you can log, check your FP_L pressures. Should stay above 50psi at full load. For reference, my healthy stg2 pump sits at 65-70 psi during a pull. __________________ 2010 E82 1 Series M Clone Hydra Performance augmented OEM+
	Appreciate 0 Quote